31102023132 has 36 divisors (see below), whose sum is σ = 78947974560. Its totient is φ = 10323960192.

The previous prime is 31102023059. The next prime is 31102023137. The reversal of 31102023132 is 23132020113.

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

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31102023137) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1798813 + ... + 1816020.

Almost surely, 2^31102023132 is an apocalyptic number.

It is an amenable number.

31102023132 is an abundant number, since it is smaller than the sum of its proper divisors (47845951428).

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

31102023132 is a wasteful number, since it uses less digits than its factorization.

31102023132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3615082 (or 3615077 counting only the distinct ones).

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

Adding to 31102023132 its reverse (23132020113), we get a palindrome (54234043245).

The spelling of 31102023132 in words is "thirty-one billion, one hundred two million, twenty-three thousand, one hundred thirty-two".