13121031132 has 48 divisors (see below), whose sum is σ = 37109990400. Its totient is φ = 3976069680.

The previous prime is 13121031107. The next prime is 13121031167. The reversal of 13121031132 is 23113012131.

13121031132 is a `hidden beast` number, since 1 + 312 + 10 + 311 + 32 = 666.

It is a super-2 number, since 2×13121031132² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5521132 + ... + 5523507.

It is an arithmetic number, because the mean of its divisors is an integer number (773124800).

Almost surely, 2^13121031132 is an apocalyptic number.

13121031132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13121031132 is an abundant number, since it is smaller than the sum of its proper divisors (23988959268).

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

13121031132 is a wasteful number, since it uses less digits than its factorization.

13121031132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11044663 (or 11044655 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 13121031132 its reverse (23113012131), we get a palindrome (36234043263).

The spelling of 13121031132 in words is "thirteen billion, one hundred twenty-one million, thirty-one thousand, one hundred thirty-two".