31104640431641 has 16 divisors (see below), whose sum is σ = 38154834641664. Its totient is φ = 24749081915904.

The previous prime is 31104640431637. The next prime is 31104640431649. The reversal of 31104640431641 is 14613404640113.

It is a cyclic number.

It is not a de Polignac number, because 31104640431641 - 2² = 31104640431637 is a prime.

It is a super-3 number, since 3×31104640431641³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31104640431595 and 31104640431604.

It is not an unprimeable number, because it can be changed into a prime (31104640431649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1790289485 + ... + 1790306858.

It is an arithmetic number, because the mean of its divisors is an integer number (2384677165104).

Almost surely, 2^{31104640431641} is an apocalyptic number.

It is an amenable number.

31104640431641 is a deficient number, since it is larger than the sum of its proper divisors (7050194210023).

31104640431641 is a wasteful number, since it uses less digits than its factorization.

31104640431641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3580596440.

The product of its (nonzero) digits is 82944, while the sum is 38.

The spelling of 31104640431641 in words is "thirty-one trillion, one hundred four billion, six hundred forty million, four hundred thirty-one thousand, six hundred forty-one".