31572000252 has 72 divisors (see below), whose sum is σ = 87944800944. Its totient is φ = 9488537856.

The previous prime is 31572000247. The next prime is 31572000259. The reversal of 31572000252 is 25200027513.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31572000259) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 764313 + ... + 804560.

Almost surely, 2^31572000252 is an apocalyptic number.

It is an amenable number.

31572000252 is an abundant number, since it is smaller than the sum of its proper divisors (56372800692).

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

31572000252 is a wasteful number, since it uses less digits than its factorization.

31572000252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1568939 (or 1568934 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

Adding to 31572000252 its reverse (25200027513), we get a palindrome (56772027765).

The spelling of 31572000252 in words is "thirty-one billion, five hundred seventy-two million, two hundred fifty-two", and thus it is an aban number.