31375992119 has 4 divisors (see below), whose sum is σ = 32223991944. Its totient is φ = 30527992296.

The previous prime is 31375992113. The next prime is 31375992121. The reversal of 31375992119 is 91129957313.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91129957313 = 127 ⋅717558719.

It is a cyclic number.

It is not a de Polignac number, because 31375992119 - 2⁸ = 31375991863 is a prime.

It is a super-2 number, since 2×31375992119² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31375992113) 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, 423999857 + ... + 423999930.

It is an arithmetic number, because the mean of its divisors is an integer number (8055997986).

Almost surely, 2^31375992119 is an apocalyptic number.

31375992119 is a deficient number, since it is larger than the sum of its proper divisors (847999825).

31375992119 is an equidigital number, since it uses as much as digits as its factorization.

31375992119 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 847999824.

The product of its digits is 459270, while the sum is 50.

The spelling of 31375992119 in words is "thirty-one billion, three hundred seventy-five million, nine hundred ninety-two thousand, one hundred nineteen".