431369 has 2 divisors, whose sum is σ = 431370. Its totient is φ = 431368.

The previous prime is 431363. The next prime is 431377. The reversal of 431369 is 963134.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 405769 + 25600 = 637^2 + 160^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-431369 is a prime.

It is a super-2 number, since 2×431369² = 372158428322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is an Ulam number.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (431363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215684 + 215685.

It is an arithmetic number, because the mean of its divisors is an integer number (215685).

2⁴³¹³⁶⁹ is an apocalyptic number.

It is an amenable number.

431369 is a deficient number, since it is larger than the sum of its proper divisors (1).

431369 is an equidigital number, since it uses as much as digits as its factorization.

431369 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1944, while the sum is 26.

The square root of 431369 is about 656.7868756301. The cubic root of 431369 is about 75.5584390320.

The spelling of 431369 in words is "four hundred thirty-one thousand, three hundred sixty-nine".