31323032132 has 36 divisors (see below), whose sum is σ = 64385040384. Its totient is φ = 13061325600.

The previous prime is 31323032093. The next prime is 31323032137. The reversal of 31323032132 is 23123032313.

It is a super-2 number, since 2×31323032132² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31323032098 and 31323032107.

It is not an unprimeable number, because it can be changed into a prime (31323032137) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 370244 + ... + 446907.

It is an arithmetic number, because the mean of its divisors is an integer number (1788473344).

Almost surely, 2^31323032132 is an apocalyptic number.

It is an amenable number.

31323032132 is an abundant number, since it is smaller than the sum of its proper divisors (33062008252).

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

31323032132 is a wasteful number, since it uses less digits than its factorization.

31323032132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 817236 (or 817197 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 31323032132 its reverse (23123032313), we get a palindrome (54446064445).

The spelling of 31323032132 in words is "thirty-one billion, three hundred twenty-three million, thirty-two thousand, one hundred thirty-two".