31072420710 has 48 divisors (see below), whose sum is σ = 81424452096. Its totient is φ = 8220731904.

The previous prime is 31072420693. The next prime is 31072420711. The reversal of 31072420710 is 1702427013.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31072420711) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1347819 + ... + 1370678.

It is an arithmetic number, because the mean of its divisors is an integer number (1696342752).

Almost surely, 2^31072420710 is an apocalyptic number.

31072420710 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31072420710 is an abundant number, since it is smaller than the sum of its proper divisors (50352031386).

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

31072420710 is a wasteful number, since it uses less digits than its factorization.

31072420710 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2718637 (or 2718634 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

Adding to 31072420710 its reverse (1702427013), we get a palindrome (32774847723).

The spelling of 31072420710 in words is "thirty-one billion, seventy-two million, four hundred twenty thousand, seven hundred ten".