123210320031 has 24 divisors (see below), whose sum is σ = 181350000000. Its totient is φ = 80586013392.

The previous prime is 123210320029. The next prime is 123210320039. The reversal of 123210320031 is 130023012321.

It is not a de Polignac number, because 123210320031 - 2¹ = 123210320029 is a prime.

It is a super-2 number, since 2×123210320031² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 123210319986 and 123210320013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123210320039) 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, 32470 + ... + 497468.

It is an arithmetic number, because the mean of its divisors is an integer number (7556250000).

Almost surely, 2^123210320031 is an apocalyptic number.

123210320031 is a deficient number, since it is larger than the sum of its proper divisors (58139679969).

123210320031 is a wasteful number, since it uses less digits than its factorization.

123210320031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465563 (or 465560 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 123210320031 its reverse (130023012321), we get a palindrome (253233332352).

The spelling of 123210320031 in words is "one hundred twenty-three billion, two hundred ten million, three hundred twenty thousand, thirty-one".