31523453532 has 48 divisors (see below), whose sum is σ = 86534975520. Its totient is φ = 9889710336.

The previous prime is 31523453509. The next prime is 31523453539. The reversal of 31523453532 is 23535432513.

31523453532 is a `hidden beast` number, since 3 + 152 + 3 + 453 + 53 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31523453539) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8582983 + ... + 8586654.

It is an arithmetic number, because the mean of its divisors is an integer number (1802811990).

Almost surely, 2^31523453532 is an apocalyptic number.

It is an amenable number.

31523453532 is an abundant number, since it is smaller than the sum of its proper divisors (55011521988).

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

31523453532 is a wasteful number, since it uses less digits than its factorization.

31523453532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17169667 (or 17169659 counting only the distinct ones).

The product of its digits is 162000, while the sum is 36.

The spelling of 31523453532 in words is "thirty-one billion, five hundred twenty-three million, four hundred fifty-three thousand, five hundred thirty-two".