120520332431 has 4 divisors (see below), whose sum is σ = 120522236232. Its totient is φ = 120518428632.

The previous prime is 120520332421. The next prime is 120520332451. The reversal of 120520332431 is 134233025021.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 134233025021 = 62467 ⋅2148863.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120520332431 is a prime.

It is a super-2 number, since 2×120520332431² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 120520332431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120520332421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 853556 + ... + 984681.

It is an arithmetic number, because the mean of its divisors is an integer number (30130559058).

Almost surely, 2^120520332431 is an apocalyptic number.

120520332431 is a deficient number, since it is larger than the sum of its proper divisors (1903801).

120520332431 is an equidigital number, since it uses as much as digits as its factorization.

120520332431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1903800.

The product of its (nonzero) digits is 4320, while the sum is 26.

Adding to 120520332431 its reverse (134233025021), we get a palindrome (254753357452).

The spelling of 120520332431 in words is "one hundred twenty billion, five hundred twenty million, three hundred thirty-two thousand, four hundred thirty-one".