23112311033231 has 16 divisors (see below), whose sum is σ = 26875381478400. Its totient is φ = 19464908911008.

The previous prime is 23112311033173. The next prime is 23112311033347. The reversal of 23112311033231 is 13233011321132.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23112311033231 is a prime.

It is a super-2 number, since 2×23112311033231² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 23112311033231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23112311033531) 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, 13367111 + ... + 14996808.

It is an arithmetic number, because the mean of its divisors is an integer number (1679711342400).

Almost surely, 2^{23112311033231} is an apocalyptic number.

23112311033231 is a deficient number, since it is larger than the sum of its proper divisors (3763070445169).

23112311033231 is a wasteful number, since it uses less digits than its factorization.

23112311033231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28365958.

The product of its (nonzero) digits is 1944, while the sum is 26.

Adding to 23112311033231 its reverse (13233011321132), we get a palindrome (36345322354363).

The spelling of 23112311033231 in words is "twenty-three trillion, one hundred twelve billion, three hundred eleven million, thirty-three thousand, two hundred thirty-one".