31022321132 has 12 divisors (see below), whose sum is σ = 59224431336. Its totient is φ = 14101055040.

The previous prime is 31022321129. The next prime is 31022321137. The reversal of 31022321132 is 23112322013.

It is a super-2 number, since 2×31022321132² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31022321137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 352526333 + ... + 352526420.

It is an arithmetic number, because the mean of its divisors is an integer number (4935369278).

Almost surely, 2^31022321132 is an apocalyptic number.

It is an amenable number.

31022321132 is a deficient number, since it is larger than the sum of its proper divisors (28202110204).

31022321132 is a wasteful number, since it uses less digits than its factorization.

31022321132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 705052768 (or 705052766 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 31022321132 its reverse (23112322013), we get a palindrome (54134643145).

The spelling of 31022321132 in words is "thirty-one billion, twenty-two million, three hundred twenty-one thousand, one hundred thirty-two".