123040140130312 has 16 divisors (see below), whose sum is σ = 230701880558700. Its totient is φ = 61519638648000.

The previous prime is 123040140130309. The next prime is 123040140130363. The reversal of 123040140130312 is 213031041040321.

It can be written as a sum of positive squares in 2 ways, for example, as 110576034684196 + 12464105446116 = 10515514^2 + 3530454^2 .

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, 52713439 + ... + 54998062.

Almost surely, 2^{123040140130312} is an apocalyptic number.

It is an amenable number.

123040140130312 is a deficient number, since it is larger than the sum of its proper divisors (107661740428388).

123040140130312 is a wasteful number, since it uses less digits than its factorization.

123040140130312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107854296 (or 107854292 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 123040140130312 its reverse (213031041040321), we get a palindrome (336071181170633).

The spelling of 123040140130312 in words is "one hundred twenty-three trillion, forty billion, one hundred forty million, one hundred thirty thousand, three hundred twelve".