431120129 has 4 divisors (see below), whose sum is σ = 470312880. Its totient is φ = 391927380.

The previous prime is 431120077. The next prime is 431120149. The reversal of 431120129 is 921021134.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 431120129 - 2¹² = 431116033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (431120149) 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, 19596359 + ... + 19596380.

It is an arithmetic number, because the mean of its divisors is an integer number (117578220).

Almost surely, 2^431120129 is an apocalyptic number.

It is an amenable number.

431120129 is a deficient number, since it is larger than the sum of its proper divisors (39192751).

431120129 is a wasteful number, since it uses less digits than its factorization.

431120129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39192750.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 431120129 is about 20763.4324956159. The cubic root of 431120129 is about 755.4390551833.

The spelling of 431120129 in words is "four hundred thirty-one million, one hundred twenty thousand, one hundred twenty-nine".