31012872563 has 8 divisors (see below), whose sum is σ = 31053108816. Its totient is φ = 30972664800.

The previous prime is 31012872479. The next prime is 31012872581. The reversal of 31012872563 is 36527821013.

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 31012872563 - 2¹⁶ = 31012807027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31012875563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2871233 + ... + 2882013.

It is an arithmetic number, because the mean of its divisors is an integer number (3881638602).

Almost surely, 2^31012872563 is an apocalyptic number.

31012872563 is a deficient number, since it is larger than the sum of its proper divisors (40236253).

31012872563 is a wasteful number, since it uses less digits than its factorization.

31012872563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14245.

The product of its (nonzero) digits is 60480, while the sum is 38.

The spelling of 31012872563 in words is "thirty-one billion, twelve million, eight hundred seventy-two thousand, five hundred sixty-three".