31415516252 has 6 divisors (see below), whose sum is σ = 54977153448. Its totient is φ = 15707758124.

The previous prime is 31415516221. The next prime is 31415516257. The reversal of 31415516252 is 25261551413.

It is a super-2 number, since 2×31415516252² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31415516257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3926939528 + ... + 3926939535.

It is an arithmetic number, because the mean of its divisors is an integer number (9162858908).

Almost surely, 2^31415516252 is an apocalyptic number.

It is an amenable number.

31415516252 is a deficient number, since it is larger than the sum of its proper divisors (23561637196).

31415516252 is a wasteful number, since it uses less digits than its factorization.

31415516252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7853879067 (or 7853879065 counting only the distinct ones).

The product of its digits is 36000, while the sum is 35.

The spelling of 31415516252 in words is "thirty-one billion, four hundred fifteen million, five hundred sixteen thousand, two hundred fifty-two".