23154535243131 has 4 divisors (see below), whose sum is σ = 30872713657512. Its totient is φ = 15436356828752.

The previous prime is 23154535243123. The next prime is 23154535243139. The reversal of 23154535243131 is 13134253545132.

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

It is an interprime number because it is at equal distance from previous prime (23154535243123) and next prime (23154535243139).

It is a cyclic number.

It is not a de Polignac number, because 23154535243131 - 2³ = 23154535243123 is a prime.

It is a super-2 number, since 2×23154535243131² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23154535243139) 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, 3859089207186 + ... + 3859089207191.

It is an arithmetic number, because the mean of its divisors is an integer number (7718178414378).

Almost surely, 2^{23154535243131} is an apocalyptic number.

23154535243131 is a deficient number, since it is larger than the sum of its proper divisors (7718178414381).

23154535243131 is an equidigital number, since it uses as much as digits as its factorization.

23154535243131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7718178414380.

The product of its digits is 648000, while the sum is 42.

Adding to 23154535243131 its reverse (13134253545132), we get a palindrome (36288788788263).

The spelling of 23154535243131 in words is "twenty-three trillion, one hundred fifty-four billion, five hundred thirty-five million, two hundred forty-three thousand, one hundred thirty-one".