123315405023210 has 16 divisors (see below), whose sum is σ = 221995237890600. Its totient is φ = 49320048931776.

The previous prime is 123315405023203. The next prime is 123315405023243. The reversal of 123315405023210 is 12320504513321.

It can be written as a sum of positive squares in 4 ways, for example, as 67844890713601 + 55470514309609 = 8236801^2 + 7447853^2 .

It is a super-2 number, since 2×123315405023210² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 764049965 + ... + 764211344.

Almost surely, 2^{123315405023210} is an apocalyptic number.

123315405023210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123315405023210 is a deficient number, since it is larger than the sum of its proper divisors (98679832867390).

123315405023210 is a wasteful number, since it uses less digits than its factorization.

123315405023210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1528269385.

The product of its (nonzero) digits is 21600, while the sum is 32.

Adding to 123315405023210 its reverse (12320504513321), we get a palindrome (135635909536531).

The spelling of 123315405023210 in words is "one hundred twenty-three trillion, three hundred fifteen billion, four hundred five million, twenty-three thousand, two hundred ten".