31042646887263 has 32 divisors (see below), whose sum is σ = 45345423981312. Its totient is φ = 18733565760000.

The previous prime is 31042646887193. The next prime is 31042646887267. The reversal of 31042646887263 is 36278864624013.

It is a de Polignac number, because none of the positive numbers 2^k-31042646887263 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31042646887197 and 31042646887206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31042646887267) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29407831 + ... + 30445127.

It is an arithmetic number, because the mean of its divisors is an integer number (1417044499416).

Almost surely, 2^{31042646887263} is an apocalyptic number.

31042646887263 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

31042646887263 is a deficient number, since it is larger than the sum of its proper divisors (14302777094049).

31042646887263 is a wasteful number, since it uses less digits than its factorization.

31042646887263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1041175.

The product of its (nonzero) digits is 55738368, while the sum is 60.

The spelling of 31042646887263 in words is "thirty-one trillion, forty-two billion, six hundred forty-six million, eight hundred eighty-seven thousand, two hundred sixty-three".