3971531963076 has 24 divisors (see below), whose sum is σ = 9275741983200. Its totient is φ = 1322581977792.

The previous prime is 3971531963051. The next prime is 3971531963117. The reversal of 3971531963076 is 6703691351793.

It is a happy number.

It is a super-2 number, since 2×3971531963076² (a number of 26 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 157738126 + ... + 157763301.

It is an arithmetic number, because the mean of its divisors is an integer number (386489249300).

Almost surely, 2^{3971531963076} is an apocalyptic number.

It is an amenable number.

3971531963076 is an abundant number, since it is smaller than the sum of its proper divisors (5304210020124).

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

3971531963076 is a wasteful number, since it uses less digits than its factorization.

3971531963076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315502483 (or 315502481 counting only the distinct ones).

The product of its (nonzero) digits is 19289340, while the sum is 60.

The spelling of 3971531963076 in words is "three trillion, nine hundred seventy-one billion, five hundred thirty-one million, nine hundred sixty-three thousand, seventy-six".