31072423452 has 96 divisors (see below), whose sum is σ = 87297638400. Its totient is φ = 8403175872.

The previous prime is 31072423429. The next prime is 31072423453. The reversal of 31072423452 is 25432427013.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31072423453) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1943949 + ... + 1959867.

It is an arithmetic number, because the mean of its divisors is an integer number (909350400).

Almost surely, 2^31072423452 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31072423452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43648819200).

31072423452 is an abundant number, since it is smaller than the sum of its proper divisors (56225214948).

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

31072423452 is a wasteful number, since it uses less digits than its factorization.

31072423452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17175 (or 17173 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 33.

The spelling of 31072423452 in words is "thirty-one billion, seventy-two million, four hundred twenty-three thousand, four hundred fifty-two".