123023213131 has 24 divisors (see below), whose sum is σ = 157396115520. Its totient is φ = 95266023552.

The previous prime is 123023213129. The next prime is 123023213141. The reversal of 123023213131 is 131312320321.

It is not a de Polignac number, because 123023213131 - 2¹ = 123023213129 is a prime.

It is a super-2 number, since 2×123023213131² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (123023213141) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2024626 + ... + 2084503.

It is an arithmetic number, because the mean of its divisors is an integer number (6558171480).

Almost surely, 2^123023213131 is an apocalyptic number.

123023213131 is a deficient number, since it is larger than the sum of its proper divisors (34372902389).

123023213131 is a wasteful number, since it uses less digits than its factorization.

123023213131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4109203 (or 4109196 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 123023213131 its reverse (131312320321), we get a palindrome (254335533452).

The spelling of 123023213131 in words is "one hundred twenty-three billion, twenty-three million, two hundred thirteen thousand, one hundred thirty-one".