31001375861456 has 80 divisors (see below), whose sum is σ = 80646935849088. Its totient is φ = 11149345958400.

The previous prime is 31001375861419. The next prime is 31001375861473. The reversal of 31001375861456 is 65416857310013.

It is a super-2 number, since 2×31001375861456² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 967809155 + ... + 967841186.

Almost surely, 2^{31001375861456} is an apocalyptic number.

It is an amenable number.

31001375861456 is an abundant number, since it is smaller than the sum of its proper divisors (49645559987632).

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

31001375861456 is a wasteful number, since it uses less digits than its factorization.

31001375861456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1935650380 (or 1935650374 counting only the distinct ones).

The product of its (nonzero) digits is 1814400, while the sum is 50.

The spelling of 31001375861456 in words is "thirty-one trillion, one billion, three hundred seventy-five million, eight hundred sixty-one thousand, four hundred fifty-six".