23451121311 has 16 divisors (see below), whose sum is σ = 32140082016. Its totient is φ = 15203342336.

The previous prime is 23451121307. The next prime is 23451121321. The reversal of 23451121311 is 11312115432.

It is a cyclic number.

It is not a de Polignac number, because 23451121311 - 2² = 23451121307 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23451121321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 634650 + ... + 670583.

It is an arithmetic number, because the mean of its divisors is an integer number (2008755126).

Almost surely, 2^23451121311 is an apocalyptic number.

23451121311 is a deficient number, since it is larger than the sum of its proper divisors (8688960705).

23451121311 is a wasteful number, since it uses less digits than its factorization.

23451121311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1305402.

The product of its digits is 720, while the sum is 24.

Adding to 23451121311 its reverse (11312115432), we get a palindrome (34763236743).

The spelling of 23451121311 in words is "twenty-three billion, four hundred fifty-one million, one hundred twenty-one thousand, three hundred eleven".