31936970434980 has 144 divisors (see below), whose sum is σ = 96846064439040. Its totient is φ = 7860216139776.

The previous prime is 31936970434867. The next prime is 31936970434981. The reversal of 31936970434980 is 8943407963913.

It is a super-2 number, since 2×31936970434980² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31936970434981) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 67591029 + ... + 68061891.

It is an arithmetic number, because the mean of its divisors is an integer number (672542114160).

Almost surely, 2^{31936970434980} is an apocalyptic number.

31936970434980 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31936970434980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48423032219520).

31936970434980 is an abundant number, since it is smaller than the sum of its proper divisors (64909094004060).

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

31936970434980 is a wasteful number, since it uses less digits than its factorization.

31936970434980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 477590 (or 477575 counting only the distinct ones).

The product of its (nonzero) digits is 105815808, while the sum is 66.

The spelling of 31936970434980 in words is "thirty-one trillion, nine hundred thirty-six billion, nine hundred seventy million, four hundred thirty-four thousand, nine hundred eighty".