31347442875 has 32 divisors (see below), whose sum is σ = 59613884928. Its totient is φ = 14330258400.

The previous prime is 31347442873. The next prime is 31347442879. The reversal of 31347442875 is 57824474313.

It is not a de Polignac number, because 31347442875 - 2¹ = 31347442873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31347442873) 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 31 ways as a sum of consecutive naturals, for example, 5968317 + ... + 5973566.

It is an arithmetic number, because the mean of its divisors is an integer number (1862933904).

Almost surely, 2^31347442875 is an apocalyptic number.

31347442875 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

31347442875 is a deficient number, since it is larger than the sum of its proper divisors (28266442053).

31347442875 is a wasteful number, since it uses less digits than its factorization.

31347442875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11941908 (or 11941898 counting only the distinct ones).

The product of its digits is 2257920, while the sum is 48.

The spelling of 31347442875 in words is "thirty-one billion, three hundred forty-seven million, four hundred forty-two thousand, eight hundred seventy-five".