23123213320131 has 32 divisors (see below), whose sum is σ = 35529255434240. Its totient is φ = 14847499648800.

The previous prime is 23123213320121. The next prime is 23123213320159. The reversal of 23123213320131 is 13102331232132.

23123213320131 is a `hidden beast` number, since 2 + 3 + 1 + 2 + 321 + 3 + 320 + 13 + 1 = 666.

It is not a de Polignac number, because 23123213320131 - 2¹⁹ = 23123212795843 is a prime.

It is a super-2 number, since 2×23123213320131² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23123213320095 and 23123213320104.

It is not an unprimeable number, because it can be changed into a prime (23123213320121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 65288560 + ... + 65641773.

It is an arithmetic number, because the mean of its divisors is an integer number (1110289232320).

Almost surely, 2^{23123213320131} is an apocalyptic number.

23123213320131 is a deficient number, since it is larger than the sum of its proper divisors (12406042114109).

23123213320131 is a wasteful number, since it uses less digits than its factorization.

23123213320131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130930584 (or 130930578 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

Adding to 23123213320131 its reverse (13102331232132), we get a palindrome (36225544552263).

The spelling of 23123213320131 in words is "twenty-three trillion, one hundred twenty-three billion, two hundred thirteen million, three hundred twenty thousand, one hundred thirty-one".