330231157 has 2 divisors, whose sum is σ = 330231158. Its totient is φ = 330231156.

The previous prime is 330231113. The next prime is 330231173. The reversal of 330231157 is 751132033.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 228342321 + 101888836 = 15111^2 + 10094^2 .

It is an emirp because it is prime and its reverse (751132033) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 330231157 - 2¹⁵ = 330198389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (330231197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165115578 + 165115579.

It is an arithmetic number, because the mean of its divisors is an integer number (165115579).

Almost surely, 2^330231157 is an apocalyptic number.

It is an amenable number.

330231157 is a deficient number, since it is larger than the sum of its proper divisors (1).

330231157 is an equidigital number, since it uses as much as digits as its factorization.

330231157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1890, while the sum is 25.

The square root of 330231157 is about 18172.2633978269. The cubic root of 330231157 is about 691.2036381394.

The spelling of 330231157 in words is "three hundred thirty million, two hundred thirty-one thousand, one hundred fifty-seven".