31420568740 has 48 divisors (see below), whose sum is σ = 72694407744. Its totient is φ = 11312528000.

The previous prime is 31420568737. The next prime is 31420568749. The reversal of 31420568740 is 4786502413.

It is a junction number, because it is equal to n+sod(n) for n = 31420568693 and 31420568702.

It is not an unprimeable number, because it can be changed into a prime (31420568749) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 684814 + ... + 729253.

It is an arithmetic number, because the mean of its divisors is an integer number (1514466828).

Almost surely, 2^31420568740 is an apocalyptic number.

It is an amenable number.

31420568740 is an abundant number, since it is smaller than the sum of its proper divisors (41273839004).

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

31420568740 is a wasteful number, since it uses less digits than its factorization.

31420568740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1414188 (or 1414186 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 40.

The spelling of 31420568740 in words is "thirty-one billion, four hundred twenty million, five hundred sixty-eight thousand, seven hundred forty".