23311323031 has 4 divisors (see below), whose sum is σ = 23414016312. Its totient is φ = 23208629752.

The previous prime is 23311323023. The next prime is 23311323037. The reversal of 23311323031 is 13032311332.

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 23311323031 - 2³ = 23311323023 is a prime.

It is a super-2 number, since 2×23311323031² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23311322993 and 23311323011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23311323037) 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, 51346300 + ... + 51346753.

It is an arithmetic number, because the mean of its divisors is an integer number (5853504078).

Almost surely, 2^23311323031 is an apocalyptic number.

23311323031 is a deficient number, since it is larger than the sum of its proper divisors (102693281).

23311323031 is a wasteful number, since it uses less digits than its factorization.

23311323031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102693280.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 23311323031 its reverse (13032311332), we get a palindrome (36343634363).

The spelling of 23311323031 in words is "twenty-three billion, three hundred eleven million, three hundred twenty-three thousand, thirty-one".