23311123019 has 4 divisors (see below), whose sum is σ = 23478829080. Its totient is φ = 23143416960.

The previous prime is 23311123007. The next prime is 23311123037. The reversal of 23311123019 is 91032111332.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 23311123019 - 2⁸ = 23311122763 is a prime.

It is a super-2 number, since 2×23311123019² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23311123519) 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, 83852822 + ... + 83853099.

It is an arithmetic number, because the mean of its divisors is an integer number (5869707270).

Almost surely, 2^23311123019 is an apocalyptic number.

23311123019 is a deficient number, since it is larger than the sum of its proper divisors (167706061).

23311123019 is a wasteful number, since it uses less digits than its factorization.

23311123019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167706060.

The product of its (nonzero) digits is 972, while the sum is 26.

The spelling of 23311123019 in words is "twenty-three billion, three hundred eleven million, one hundred twenty-three thousand, nineteen".