313087531187 has 4 divisors (see below), whose sum is σ = 314836623720. Its totient is φ = 311338438656.

The previous prime is 313087531117. The next prime is 313087531189. The reversal of 313087531187 is 781135780313.

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 313087531187 - 2¹⁶ = 313087465651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (313087531189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 874545998 + ... + 874546355.

It is an arithmetic number, because the mean of its divisors is an integer number (78709155930).

Almost surely, 2^313087531187 is an apocalyptic number.

313087531187 is a deficient number, since it is larger than the sum of its proper divisors (1749092533).

313087531187 is a wasteful number, since it uses less digits than its factorization.

313087531187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1749092532.

The product of its (nonzero) digits is 423360, while the sum is 47.

The spelling of 313087531187 in words is "three hundred thirteen billion, eighty-seven million, five hundred thirty-one thousand, one hundred eighty-seven".