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2031132140 = 225367276721
BaseRepresentation
bin111100100010000…
…1001110111101100
312020112221012111022
41321010021313230
513124432212030
6533314113312
7101222224022
oct17104116754
95215835438
102031132140
11952580704
1248827b838
13264a5774b
14153a80712
15bd4b1de5
hex79109dec

2031132140 has 24 divisors (see below), whose sum is σ = 4277015232. Its totient is φ = 810236160.

The previous prime is 2031132127. The next prime is 2031132143. The reversal of 2031132140 is 412311302.

It is not an unprimeable number, because it can be changed into a prime (2031132143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 131021 + ... + 145700.

It is an arithmetic number, because the mean of its divisors is an integer number (178208968).

Almost surely, 22031132140 is an apocalyptic number.

2031132140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2031132140 is an abundant number, since it is smaller than the sum of its proper divisors (2245883092).

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

2031132140 is a wasteful number, since it uses less digits than its factorization.

2031132140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277097 (or 277095 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 2031132140 is about 45068.0833850298. The cubic root of 2031132140 is about 1266.4247597441.

Adding to 2031132140 its reverse (412311302), we get a palindrome (2443443442).

The spelling of 2031132140 in words is "two billion, thirty-one million, one hundred thirty-two thousand, one hundred forty".

Divisors: 1 2 4 5 10 20 367 734 1468 1835 3670 7340 276721 553442 1106884 1383605 2767210 5534420 101556607 203113214 406226428 507783035 1015566070 2031132140