431142949 has 2 divisors, whose sum is σ = 431142950. Its totient is φ = 431142948.

The previous prime is 431142931. The next prime is 431142991. The reversal of 431142949 is 949241134.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 292068100 + 139074849 = 17090^2 + 11793^2 .

It is a cyclic number.

It is not a de Polignac number, because 431142949 - 2²⁵ = 397588517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (431142149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215571474 + 215571475.

It is an arithmetic number, because the mean of its divisors is an integer number (215571475).

Almost surely, 2^431142949 is an apocalyptic number.

It is an amenable number.

431142949 is a deficient number, since it is larger than the sum of its proper divisors (1).

431142949 is an equidigital number, since it uses as much as digits as its factorization.

431142949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31104, while the sum is 37.

The square root of 431142949 is about 20763.9820121286. The cubic root of 431142949 is about 755.4523838852.

It can be divided in two parts, 431 and 142949, that added together give a triangular number (143380 = T₅₃₅).

The spelling of 431142949 in words is "four hundred thirty-one million, one hundred forty-two thousand, nine hundred forty-nine".