31400065506220 has 48 divisors (see below), whose sum is σ = 67477489567488. Its totient is φ = 12267230673600.

The previous prime is 31400065506197. The next prime is 31400065506247. The reversal of 31400065506220 is 2260556000413.

It is a super-2 number, since 2×31400065506220² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14123545 + ... + 16194895.

It is an arithmetic number, because the mean of its divisors is an integer number (1405781032656).

Almost surely, 2^{31400065506220} is an apocalyptic number.

It is an amenable number.

31400065506220 is an abundant number, since it is smaller than the sum of its proper divisors (36077424061268).

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

31400065506220 is a wasteful number, since it uses less digits than its factorization.

31400065506220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2089030 (or 2089028 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 34.

The spelling of 31400065506220 in words is "thirty-one trillion, four hundred billion, sixty-five million, five hundred six thousand, two hundred twenty".