31401564131 has 8 divisors (see below), whose sum is σ = 37447828224. Its totient is φ = 25745381640.

The previous prime is 31401564113. The next prime is 31401564137. The reversal of 31401564131 is 13146510413.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31401564131 - 2⁶ = 31401564067 is a prime.

It is a super-2 number, since 2×31401564131² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31401564094 and 31401564103.

It is not an unprimeable number, because it can be changed into a prime (31401564137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97520225 + ... + 97520546.

It is an arithmetic number, because the mean of its divisors is an integer number (4680978528).

Almost surely, 2^31401564131 is an apocalyptic number.

31401564131 is a deficient number, since it is larger than the sum of its proper divisors (6046264093).

31401564131 is a wasteful number, since it uses less digits than its factorization.

31401564131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195040801.

The product of its (nonzero) digits is 4320, while the sum is 29.

The spelling of 31401564131 in words is "thirty-one billion, four hundred one million, five hundred sixty-four thousand, one hundred thirty-one".