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131213412031 = 1370114398487
BaseRepresentation
bin111101000110011101…
…1011100011010111111
3110112200111011222000011
41322030323130122333
54122211113141111
6140140102444051
712323406412522
oct1721473343277
9415614158004
10131213412031
1150713606599
122151b133627
13c4b13b3910
1464ca6cabb9
15362e64d021
hex1e8cedc6bf

131213412031 has 8 divisors (see below), whose sum is σ = 141508340064. Its totient is φ = 120947282400.

The previous prime is 131213411941. The next prime is 131213412037. The reversal of 131213412031 is 130214312131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 131213412031 - 29 = 131213411519 is a prime.

It is a super-2 number, since 2×1312134120312 (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 131213411993 and 131213412011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131213412037) 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, 7190131 + ... + 7208356.

It is an arithmetic number, because the mean of its divisors is an integer number (17688542508).

Almost surely, 2131213412031 is an apocalyptic number.

131213412031 is a deficient number, since it is larger than the sum of its proper divisors (10294928033).

131213412031 is a wasteful number, since it uses less digits than its factorization.

131213412031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14399201.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 131213412031 its reverse (130214312131), we get a palindrome (261427724162).

The spelling of 131213412031 in words is "one hundred thirty-one billion, two hundred thirteen million, four hundred twelve thousand, thirty-one".

Divisors: 1 13 701 9113 14398487 187180331 10093339387 131213412031