123012302331 has 16 divisors (see below), whose sum is σ = 168527173760. Its totient is φ = 79768644480.

The previous prime is 123012302323. The next prime is 123012302393. The reversal of 123012302331 is 133203210321.

It is not a de Polignac number, because 123012302331 - 2³ = 123012302323 is a prime.

It is a super-2 number, since 2×123012302331² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123012302298 and 123012302307.

It is not an unprimeable number, because it can be changed into a prime (123012302531) 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, 1947301 + ... + 2009478.

It is an arithmetic number, because the mean of its divisors is an integer number (10532948360).

Almost surely, 2^123012302331 is an apocalyptic number.

123012302331 is a deficient number, since it is larger than the sum of its proper divisors (45514871429).

123012302331 is a wasteful number, since it uses less digits than its factorization.

123012302331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3957066.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 123012302331 its reverse (133203210321), we get a palindrome (256215512652).

The spelling of 123012302331 in words is "one hundred twenty-three billion, twelve million, three hundred two thousand, three hundred thirty-one".