431913317 has 4 divisors (see below), whose sum is σ = 471178176. Its totient is φ = 392648460.

The previous prime is 431913281. The next prime is 431913319. The reversal of 431913317 is 713319134.

It is a happy number.

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 431913317 - 2⁶ = 431913253 is a prime.

It is a super-2 number, since 2×431913317² = 373098226803884978, 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 (431913319) 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, 19632413 + ... + 19632434.

It is an arithmetic number, because the mean of its divisors is an integer number (117794544).

Almost surely, 2^431913317 is an apocalyptic number.

It is an amenable number.

431913317 is a deficient number, since it is larger than the sum of its proper divisors (39264859).

431913317 is a wasteful number, since it uses less digits than its factorization.

431913317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39264858.

The product of its digits is 6804, while the sum is 32.

The square root of 431913317 is about 20782.5243173201. The cubic root of 431913317 is about 755.9020646397.

The spelling of 431913317 in words is "four hundred thirty-one million, nine hundred thirteen thousand, three hundred seventeen".