931485157 has 2 divisors, whose sum is σ = 931485158. Its totient is φ = 931485156.

The previous prime is 931485047. The next prime is 931485169. The reversal of 931485157 is 751584139.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 885598081 + 45887076 = 29759^2 + 6774^2 .

It is a cyclic number.

It is not a de Polignac number, because 931485157 - 2¹⁹ = 930960869 is a prime.

It is a super-2 number, since 2×931485157² = 1735329195422629298, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (931485557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 465742578 + 465742579.

It is an arithmetic number, because the mean of its divisors is an integer number (465742579).

Almost surely, 2^931485157 is an apocalyptic number.

It is an amenable number.

931485157 is a deficient number, since it is larger than the sum of its proper divisors (1).

931485157 is an equidigital number, since it uses as much as digits as its factorization.

931485157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 151200, while the sum is 43.

The square root of 931485157 is about 30520.2417585444. The cubic root of 931485157 is about 976.6193233557.

The spelling of 931485157 in words is "nine hundred thirty-one million, four hundred eighty-five thousand, one hundred fifty-seven".