31980807958 has 12 divisors (see below), whose sum is σ = 52728687900. Its totient is φ = 14536730780.

The previous prime is 31980807919. The next prime is 31980807959. The reversal of 31980807958 is 85970808913.

It is a super-2 number, since 2×31980807958² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31980807959) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 66075808 + ... + 66076291.

It is an arithmetic number, because the mean of its divisors is an integer number (4394057325).

Almost surely, 2^31980807958 is an apocalyptic number.

31980807958 is a deficient number, since it is larger than the sum of its proper divisors (20747879942).

31980807958 is a wasteful number, since it uses less digits than its factorization.

31980807958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132152123 (or 132152112 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 58.

It can be divided in two parts, 31980 and 807958, that added together give a palindrome (839938).

The spelling of 31980807958 in words is "thirty-one billion, nine hundred eighty million, eight hundred seven thousand, nine hundred fifty-eight".