123012320331 has 16 divisors (see below), whose sum is σ = 182804688000. Its totient is φ = 73121874048.

The previous prime is 123012320303. The next prime is 123012320357. The reversal of 123012320331 is 133023210321.

It is not a de Polignac number, because 123012320331 - 2⁷ = 123012320203 is a prime.

It is a super-2 number, since 2×123012320331² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 123012320298 and 123012320307.

It is not an unprimeable number, because it can be changed into a prime (123012320231) 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, 63472881 + ... + 63474818.

It is an arithmetic number, because the mean of its divisors is an integer number (11425293000).

Almost surely, 2^123012320331 is an apocalyptic number.

123012320331 is a deficient number, since it is larger than the sum of its proper divisors (59792367669).

123012320331 is a wasteful number, since it uses less digits than its factorization.

123012320331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126947738.

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

Adding to 123012320331 its reverse (133023210321), we get a palindrome (256035530652).

The spelling of 123012320331 in words is "one hundred twenty-three billion, twelve million, three hundred twenty thousand, three hundred thirty-one".