31012032132 has 36 divisors (see below), whose sum is σ = 79124166576. Its totient is φ = 10240732080.

The previous prime is 31012032127. The next prime is 31012032143. The reversal of 31012032132 is 23123021013.

31012032132 is a `hidden beast` number, since 310 + 1 + 2 + 0 + 321 + 32 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×31012032132² (a number of 22 digits) contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4021594 + ... + 4029297.

It is an arithmetic number, because the mean of its divisors is an integer number (2197893516).

Almost surely, 2^31012032132 is an apocalyptic number.

It is an amenable number.

31012032132 is an abundant number, since it is smaller than the sum of its proper divisors (48112134444).

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

31012032132 is a wasteful number, since it uses less digits than its factorization.

31012032132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8051008 (or 8051003 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 31012032132 its reverse (23123021013), we get a palindrome (54135053145).

The spelling of 31012032132 in words is "thirty-one billion, twelve million, thirty-two thousand, one hundred thirty-two".