120775231 has 4 divisors (see below), whose sum is σ = 126026352. Its totient is φ = 115524112.

The previous prime is 120775219. The next prime is 120775241. The reversal of 120775231 is 132577021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 120775231 - 2⁵ = 120775199 is a prime.

It is a super-2 number, since 2×120775231² = 29173312846206722, which 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 120775231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120775201) 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, 2625526 + ... + 2625571.

It is an arithmetic number, because the mean of its divisors is an integer number (31506588).

Almost surely, 2^120775231 is an apocalyptic number.

120775231 is a deficient number, since it is larger than the sum of its proper divisors (5251121).

120775231 is an equidigital number, since it uses as much as digits as its factorization.

120775231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5251120.

The product of its (nonzero) digits is 2940, while the sum is 28.

The square root of 120775231 is about 10989.7784782042. The cubic root of 120775231 is about 494.3022935757.

The spelling of 120775231 in words is "one hundred twenty million, seven hundred seventy-five thousand, two hundred thirty-one".