331213118 has 32 divisors (see below), whose sum is σ = 525713760. Its totient is φ = 156280320.

The previous prime is 331213117. The next prime is 331213139. The reversal of 331213118 is 811312133.

It is a junction number, because it is equal to n+sod(n) for n = 331213093 and 331213102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331213117) 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 in 15 ways as a sum of consecutive naturals, for example, 579773 + ... + 580343.

It is an arithmetic number, because the mean of its divisors is an integer number (16428555).

Almost surely, 2^331213118 is an apocalyptic number.

331213118 is a deficient number, since it is larger than the sum of its proper divisors (194500642).

331213118 is a wasteful number, since it uses less digits than its factorization.

331213118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 812.

The product of its digits is 432, while the sum is 23.

The square root of 331213118 is about 18199.2614685322. The cubic root of 331213118 is about 691.8880712082. Note that the first 3 decimals are identical.

The spelling of 331213118 in words is "three hundred thirty-one million, two hundred thirteen thousand, one hundred eighteen".