431044157 has 2 divisors, whose sum is σ = 431044158. Its totient is φ = 431044156.

The previous prime is 431044121. The next prime is 431044183. The reversal of 431044157 is 751440134.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 352650841 + 78393316 = 18779^2 + 8854^2 .

It is a cyclic number.

It is not a de Polignac number, because 431044157 - 2²² = 426849853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (431044457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215522078 + 215522079.

It is an arithmetic number, because the mean of its divisors is an integer number (215522079).

Almost surely, 2^431044157 is an apocalyptic number.

It is an amenable number.

431044157 is a deficient number, since it is larger than the sum of its proper divisors (1).

431044157 is an equidigital number, since it uses as much as digits as its factorization.

431044157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 431044157 is about 20761.6029487128. The cubic root of 431044157 is about 755.3946780800.

The spelling of 431044157 in words is "four hundred thirty-one million, forty-four thousand, one hundred fifty-seven".