123023430440212 has 12 divisors (see below), whose sum is σ = 227955179933460. Its totient is φ = 57893379030656.

The previous prime is 123023430440189. The next prime is 123023430440249. The reversal of 123023430440212 is 212044034320321.

It can be written as a sum of positive squares in 2 ways, for example, as 51718477701136 + 71304952739076 = 7191556^2 + 8444226^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 904584047287 + ... + 904584047422.

It is an arithmetic number, because the mean of its divisors is an integer number (18996264994455).

Almost surely, 2^{123023430440212} is an apocalyptic number.

It is an amenable number.

123023430440212 is a deficient number, since it is larger than the sum of its proper divisors (104931749493248).

123023430440212 is a wasteful number, since it uses less digits than its factorization.

123023430440212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1809168094730 (or 1809168094728 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 31.

Adding to 123023430440212 its reverse (212044034320321), we get a palindrome (335067464760533).

The spelling of 123023430440212 in words is "one hundred twenty-three trillion, twenty-three billion, four hundred thirty million, four hundred forty thousand, two hundred twelve".