431131199 has 2 divisors, whose sum is σ = 431131200. Its totient is φ = 431131198.

The previous prime is 431131193. The next prime is 431131243. The reversal of 431131199 is 991131134.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 431131199 - 2²⁴ = 414353983 is a prime.

It is a super-2 number, since 2×431131199² = 371748221502355202, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (431131193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215565599 + 215565600.

It is an arithmetic number, because the mean of its divisors is an integer number (215565600).

Almost surely, 2^431131199 is an apocalyptic number.

431131199 is a deficient number, since it is larger than the sum of its proper divisors (1).

431131199 is an equidigital number, since it uses as much as digits as its factorization.

431131199 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2916, while the sum is 32.

The square root of 431131199 is about 20763.6990683260. The cubic root of 431131199 is about 755.4455210058.

The spelling of 431131199 in words is "four hundred thirty-one million, one hundred thirty-one thousand, one hundred ninety-nine".