31864427456263 has 4 divisors (see below), whose sum is σ = 33541502585560. Its totient is φ = 30187352326968.

The previous prime is 31864427456207. The next prime is 31864427456273. The reversal of 31864427456263 is 36265472446813.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 31864427456263 - 2¹³ = 31864427448071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31864427456273) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 838537564620 + ... + 838537564657.

It is an arithmetic number, because the mean of its divisors is an integer number (8385375646390).

Almost surely, 2^{31864427456263} is an apocalyptic number.

31864427456263 is a deficient number, since it is larger than the sum of its proper divisors (1677075129297).

31864427456263 is a wasteful number, since it uses less digits than its factorization.

31864427456263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1677075129296.

The product of its digits is 139345920, while the sum is 61.

The spelling of 31864427456263 in words is "thirty-one trillion, eight hundred sixty-four billion, four hundred twenty-seven million, four hundred fifty-six thousand, two hundred sixty-three".