31125146107 has 4 divisors (see below), whose sum is σ = 33954704856. Its totient is φ = 28295587360.

The previous prime is 31125146093. The next prime is 31125146111. The reversal of 31125146107 is 70164152113.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70164152113 = 11 ⋅6378559283.

It is a cyclic number.

It is not a de Polignac number, because 31125146107 - 2⁷ = 31125145979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31125146137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1414779358 + ... + 1414779379.

It is an arithmetic number, because the mean of its divisors is an integer number (8488676214).

Almost surely, 2^31125146107 is an apocalyptic number.

31125146107 is a deficient number, since it is larger than the sum of its proper divisors (2829558749).

31125146107 is a wasteful number, since it uses less digits than its factorization.

31125146107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2829558748.

The product of its (nonzero) digits is 5040, while the sum is 31.

The spelling of 31125146107 in words is "thirty-one billion, one hundred twenty-five million, one hundred forty-six thousand, one hundred seven".