111390975923 has 4 divisors (see below), whose sum is σ = 111392137560. Its totient is φ = 111389814288.

The previous prime is 111390975919. The next prime is 111390975947. The reversal of 111390975923 is 329579093111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 329579093111 = 971 ⋅339422341.

It is a cyclic number.

It is not a de Polignac number, because 111390975923 - 2² = 111390975919 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111390975823) 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, 422618 + ... + 633551.

It is an arithmetic number, because the mean of its divisors is an integer number (27848034390).

Almost surely, 2^111390975923 is an apocalyptic number.

111390975923 is a deficient number, since it is larger than the sum of its proper divisors (1161637).

111390975923 is a wasteful number, since it uses less digits than its factorization.

111390975923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1161636.

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

The spelling of 111390975923 in words is "one hundred eleven billion, three hundred ninety million, nine hundred seventy-five thousand, nine hundred twenty-three".