331003157 has 8 divisors (see below), whose sum is σ = 337001280. Its totient is φ = 325018080.

The previous prime is 331003111. The next prime is 331003163. The reversal of 331003157 is 751300133.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 331003157 - 2¹⁸ = 330741013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331003177) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58232 + ... + 63662.

It is an arithmetic number, because the mean of its divisors is an integer number (42125160).

Almost surely, 2^331003157 is an apocalyptic number.

It is an amenable number.

331003157 is a deficient number, since it is larger than the sum of its proper divisors (5998123).

331003157 is a wasteful number, since it uses less digits than its factorization.

331003157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6523.

The product of its (nonzero) digits is 945, while the sum is 23.

The square root of 331003157 is about 18193.4921606601. The cubic root of 331003157 is about 691.7418408705.

The spelling of 331003157 in words is "three hundred thirty-one million, three thousand, one hundred fifty-seven".