23311013031 has 16 divisors (see below), whose sum is σ = 34708384000. Its totient is φ = 15462577944.

The previous prime is 23311013021. The next prime is 23311013111. The reversal of 23311013031 is 13031011332.

It is a happy number.

It is not a de Polignac number, because 23311013031 - 2¹³ = 23311004839 is a prime.

It is a super-2 number, since 2×23311013031² (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 = 23311012995 and 23311013013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23311013021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2163901 + ... + 2174646.

It is an arithmetic number, because the mean of its divisors is an integer number (2169274000).

Almost surely, 2^23311013031 is an apocalyptic number.

23311013031 is a deficient number, since it is larger than the sum of its proper divisors (11397370969).

23311013031 is a wasteful number, since it uses less digits than its factorization.

23311013031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4338755 (or 4338749 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

Adding to 23311013031 its reverse (13031011332), we get a palindrome (36342024363).

The spelling of 23311013031 in words is "twenty-three billion, three hundred eleven million, thirteen thousand, thirty-one".