331207490 has 8 divisors (see below), whose sum is σ = 596173500. Its totient is φ = 132482992.

The previous prime is 331207489. The next prime is 331207511. The reversal of 331207490 is 94702133.

It can be written as a sum of positive squares in 2 ways, for example, as 328733161 + 2474329 = 18131^2 + 1573^2 .

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16560365 + ... + 16560384.

Almost surely, 2^331207490 is an apocalyptic number.

331207490 is a deficient number, since it is larger than the sum of its proper divisors (264966010).

331207490 is a wasteful number, since it uses less digits than its factorization.

331207490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33120756.

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 331207490 is about 18199.1068462164. The cubic root of 331207490 is about 691.8841523134.

The spelling of 331207490 in words is "three hundred thirty-one million, two hundred seven thousand, four hundred ninety".