431752397 has 2 divisors, whose sum is σ = 431752398. Its totient is φ = 431752396.

The previous prime is 431752381. The next prime is 431752403. The reversal of 431752397 is 793257134.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 218271076 + 213481321 = 14774^2 + 14611^2 .

It is a cyclic number.

It is not a de Polignac number, because 431752397 - 2⁴ = 431752381 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (431755397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215876198 + 215876199.

It is an arithmetic number, because the mean of its divisors is an integer number (215876199).

Almost surely, 2^431752397 is an apocalyptic number.

It is an amenable number.

431752397 is a deficient number, since it is larger than the sum of its proper divisors (1).

431752397 is an equidigital number, since it uses as much as digits as its factorization.

431752397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 158760, while the sum is 41.

The square root of 431752397 is about 20778.6524346503. The cubic root of 431752397 is about 755.8081763021.

The spelling of 431752397 in words is "four hundred thirty-one million, seven hundred fifty-two thousand, three hundred ninety-seven".