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132231131220 = 22352975994903
BaseRepresentation
bin111101100100110010…
…1101111000001010100
3110122022102012110021110
41323021211233001110
54131302132144340
6140425100015020
712360545033046
oct1731145570124
9418272173243
10132231131220
1151096032031
1221763b31470
13c6141b6016
14658592ba96
15368db7e680
hex1ec996f054

132231131220 has 48 divisors (see below), whose sum is σ = 383014316160. Its totient is φ = 34045716096.

The previous prime is 132231131111. The next prime is 132231131231. The reversal of 132231131220 is 22131132231.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37995712 + ... + 37999191.

It is an arithmetic number, because the mean of its divisors is an integer number (7979464920).

Almost surely, 2132231131220 is an apocalyptic number.

132231131220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

132231131220 is an abundant number, since it is smaller than the sum of its proper divisors (250783184940).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

132231131220 is a wasteful number, since it uses less digits than its factorization.

132231131220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75994944 (or 75994942 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 132231131220 its reverse (22131132231), we get a palindrome (154362263451).

It can be divided in two parts, 1322311 and 31220, that added together give a palindrome (1353531).

The spelling of 132231131220 in words is "one hundred thirty-two billion, two hundred thirty-one million, one hundred thirty-one thousand, two hundred twenty".

Divisors: 1 2 3 4 5 6 10 12 15 20 29 30 58 60 87 116 145 174 290 348 435 580 870 1740 75994903 151989806 227984709 303979612 379974515 455969418 759949030 911938836 1139923545 1519898060 2203852187 2279847090 4407704374 4559694180 6611556561 8815408748 11019260935 13223113122 22038521870 26446226244 33057782805 44077043740 66115565610 132231131220