123031434202245 has 48 divisors (see below), whose sum is σ = 214693844742000. Its totient is φ = 65173918602240.

The previous prime is 123031434202231. The next prime is 123031434202247. The reversal of 123031434202245 is 542202434130321.

123031434202245 is a `hidden beast` number, since 1 + 2 + 3 + 0 + 3 + 1 + 4 + 3 + 420 + 224 + 5 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 48537946418724 + 74493487783521 = 6966918^2 + 8630961^2 .

It is not a de Polignac number, because 123031434202245 - 2⁵ = 123031434202213 is a prime.

It is a super-2 number, since 2×123031434202245² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123031434202247) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 184248675 + ... + 184915215.

It is an arithmetic number, because the mean of its divisors is an integer number (4472788432125).

Almost surely, 2^{123031434202245} is an apocalyptic number.

123031434202245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

123031434202245 is a deficient number, since it is larger than the sum of its proper divisors (91662410539755).

123031434202245 is a wasteful number, since it uses less digits than its factorization.

123031434202245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 694230 (or 694227 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 36.

Adding to 123031434202245 its reverse (542202434130321), we get a palindrome (665233868332566).

The spelling of 123031434202245 in words is "one hundred twenty-three trillion, thirty-one billion, four hundred thirty-four million, two hundred two thousand, two hundred forty-five".