233131312120 has 48 divisors (see below), whose sum is σ = 610185531240. Its totient is φ = 79930734912.

The previous prime is 233131312067. The next prime is 233131312123. The reversal of 233131312120 is 21213131332.

It is a junction number, because it is equal to n+sod(n) for n = 233131312091 and 233131312100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (233131312123) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 59470314 + ... + 59474233.

Almost surely, 2^233131312120 is an apocalyptic number.

233131312120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

233131312120 is an abundant number, since it is smaller than the sum of its proper divisors (377054219120).

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

233131312120 is a wasteful number, since it uses less digits than its factorization.

233131312120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118944572 (or 118944561 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 233131312120 its reverse (21213131332), we get a palindrome (254344443452).

The spelling of 233131312120 in words is "two hundred thirty-three billion, one hundred thirty-one million, three hundred twelve thousand, one hundred twenty".