31052352216 has 32 divisors (see below), whose sum is σ = 77672352240. Its totient is φ = 10345254528.

The previous prime is 31052352203. The next prime is 31052352259. The reversal of 31052352216 is 61225325013.

It is a super-2 number, since 2×31052352216² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 299611 + ... + 389706.

Almost surely, 2^31052352216 is an apocalyptic number.

It is an amenable number.

31052352216 is an abundant number, since it is smaller than the sum of its proper divisors (46620000024).

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

31052352216 is a wasteful number, since it uses less digits than its factorization.

31052352216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 691203 (or 691199 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 30.

Adding to 31052352216 its reverse (61225325013), we get a palindrome (92277677229).

The spelling of 31052352216 in words is "thirty-one billion, fifty-two million, three hundred fifty-two thousand, two hundred sixteen".