120204431 has 4 divisors (see below), whose sum is σ = 126531000. Its totient is φ = 113877864.

The previous prime is 120204419. The next prime is 120204439. The reversal of 120204431 is 134402021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 134402021 = 13 ⋅10338617.

It is a cyclic number.

It is not a de Polignac number, because 120204431 - 2¹⁰ = 120203407 is a prime.

It is a super-2 number, since 2×120204431² = 28898210464067522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120204439) 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, 3163256 + ... + 3163293.

It is an arithmetic number, because the mean of its divisors is an integer number (31632750).

Almost surely, 2^120204431 is an apocalyptic number.

120204431 is a deficient number, since it is larger than the sum of its proper divisors (6326569).

120204431 is an equidigital number, since it uses as much as digits as its factorization.

120204431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6326568.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 120204431 is about 10963.7781352962. The cubic root of 120204431 is about 493.5223505167.

Adding to 120204431 its reverse (134402021), we get a palindrome (254606452).

The spelling of 120204431 in words is "one hundred twenty million, two hundred four thousand, four hundred thirty-one".