31020658489312 has 24 divisors (see below), whose sum is σ = 63727222332816. Its totient is φ = 14835967103232.

The previous prime is 31020658489309. The next prime is 31020658489343. The reversal of 31020658489312 is 21398485602013.

It is a super-2 number, since 2×31020658489312² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31020658489312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21073816173 + ... + 21073817644.

It is an arithmetic number, because the mean of its divisors is an integer number (2655300930534).

Almost surely, 2^{31020658489312} is an apocalyptic number.

31020658489312 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

31020658489312 is an abundant number, since it is smaller than the sum of its proper divisors (32706563843504).

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

31020658489312 is a wasteful number, since it uses less digits than its factorization.

31020658489312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42147633850 (or 42147633842 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 52.

The spelling of 31020658489312 in words is "thirty-one trillion, twenty billion, six hundred fifty-eight million, four hundred eighty-nine thousand, three hundred twelve".