331213250 has 32 divisors (see below), whose sum is σ = 621129600. Its totient is φ = 132250800.

The previous prime is 331213249. The next prime is 331213297. The reversal of 331213250 is 52312133.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 236051 + ... + 237449.

It is an arithmetic number, because the mean of its divisors is an integer number (19410300).

Almost surely, 2^331213250 is an apocalyptic number.

331213250 is a deficient number, since it is larger than the sum of its proper divisors (289916350).

331213250 is a wasteful number, since it uses less digits than its factorization.

331213250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2363 (or 2353 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 331213250 is about 18199.2650950526. The cubic root of 331213250 is about 691.8881631221. Note that the first 3 decimals are identical.

Adding to 331213250 its reverse (52312133), we get a palindrome (383525383).

The spelling of 331213250 in words is "three hundred thirty-one million, two hundred thirteen thousand, two hundred fifty".