431166157 has 2 divisors, whose sum is σ = 431166158. Its totient is φ = 431166156.

The previous prime is 431166103. The next prime is 431166163. The reversal of 431166157 is 751661134.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 317338596 + 113827561 = 17814^2 + 10669^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-431166157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (431166557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215583078 + 215583079.

It is an arithmetic number, because the mean of its divisors is an integer number (215583079).

Almost surely, 2^431166157 is an apocalyptic number.

It is an amenable number.

431166157 is a deficient number, since it is larger than the sum of its proper divisors (1).

431166157 is an equidigital number, since it uses as much as digits as its factorization.

431166157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15120, while the sum is 34.

The square root of 431166157 is about 20764.5408569513. The cubic root of 431166157 is about 755.4659387277.

The spelling of 431166157 in words is "four hundred thirty-one million, one hundred sixty-six thousand, one hundred fifty-seven".