123031134512220 has 96 divisors (see below), whose sum is σ = 376191222656256. Its totient is φ = 29795012915200.

The previous prime is 123031134512203. The next prime is 123031134512233. The reversal of 123031134512220 is 22215431130321.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 95348229 + ... + 96629948.

It is an arithmetic number, because the mean of its divisors is an integer number (3918658569336).

Almost surely, 2^{123031134512220} is an apocalyptic number.

123031134512220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123031134512220 is an abundant number, since it is smaller than the sum of its proper divisors (253160088144036).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123031134512220 is a wasteful number, since it uses less digits than its factorization.

123031134512220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191979171 (or 191979169 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

Adding to 123031134512220 its reverse (22215431130321), we get a palindrome (145246565642541).

The spelling of 123031134512220 in words is "one hundred twenty-three trillion, thirty-one billion, one hundred thirty-four million, five hundred twelve thousand, two hundred twenty".