31125373507 has 32 divisors (see below), whose sum is σ = 35181457920. Its totient is φ = 27388627200.

The previous prime is 31125373493. The next prime is 31125373523. The reversal of 31125373507 is 70537352113.

It is a cyclic number.

It is not a de Polignac number, because 31125373507 - 2⁷ = 31125373379 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is not an unprimeable number, because it can be changed into a prime (31125373597) 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 31 ways as a sum of consecutive naturals, for example, 9715968 + ... + 9719170.

It is an arithmetic number, because the mean of its divisors is an integer number (1099420560).

Almost surely, 2^31125373507 is an apocalyptic number.

31125373507 is a gapful number since it is divisible by the number (37) formed by its first and last digit.

31125373507 is a deficient number, since it is larger than the sum of its proper divisors (4056084413).

31125373507 is a wasteful number, since it uses less digits than its factorization.

31125373507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3883.

The product of its (nonzero) digits is 66150, while the sum is 37.

The spelling of 31125373507 in words is "thirty-one billion, one hundred twenty-five million, three hundred seventy-three thousand, five hundred seven".