331021113 has 4 divisors (see below), whose sum is σ = 441361488. Its totient is φ = 220680740.

The previous prime is 331021111. The next prime is 331021123. The reversal of 331021113 is 311120133.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 331021113 - 2¹ = 331021111 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 331021092 and 331021101.

It is not an unprimeable number, because it can be changed into a prime (331021111) 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 3 ways as a sum of consecutive naturals, for example, 55170183 + ... + 55170188.

It is an arithmetic number, because the mean of its divisors is an integer number (110340372).

Almost surely, 2^331021113 is an apocalyptic number.

It is an amenable number.

331021113 is a deficient number, since it is larger than the sum of its proper divisors (110340375).

331021113 is a wasteful number, since it uses less digits than its factorization.

331021113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110340374.

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 331021113 is about 18193.9856271241. The cubic root of 331021113 is about 691.7543490008.

Adding to 331021113 its reverse (311120133), we get a palindrome (642141246).

The spelling of 331021113 in words is "three hundred thirty-one million, twenty-one thousand, one hundred thirteen".