331113402 has 24 divisors (see below), whose sum is σ = 732678336. Its totient is φ = 108022536.

The previous prime is 331113347. The next prime is 331113413. The reversal of 331113402 is 204311133.

It is a Harshad number since it is a multiple of its sum of digits (18).

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 11 ways as a sum of consecutive naturals, for example, 194848 + ... + 196539.

It is an arithmetic number, because the mean of its divisors is an integer number (30528264).

Almost surely, 2^331113402 is an apocalyptic number.

331113402 is an abundant number, since it is smaller than the sum of its proper divisors (401564934).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

331113402 is a wasteful number, since it uses less digits than its factorization.

331113402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391442 (or 391439 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 331113402 is about 18196.5217005888. The cubic root of 331113402 is about 691.8186302833.

Adding to 331113402 its reverse (204311133), we get a palindrome (535424535).

The spelling of 331113402 in words is "three hundred thirty-one million, one hundred thirteen thousand, four hundred two".