331113131 has 8 divisors (see below), whose sum is σ = 350910864. Its totient is φ = 311351040.

The previous prime is 331113127. The next prime is 331113143. The reversal of 331113131 is 131311133.

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

It is a cyclic number.

It is not a de Polignac number, because 331113131 - 2² = 331113127 is a prime.

It is a super-2 number, since 2×331113131² = 219271811041246322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (331113031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11591 + ... + 28223.

It is an arithmetic number, because the mean of its divisors is an integer number (43863858).

Almost surely, 2^331113131 is an apocalyptic number.

331113131 is a deficient number, since it is larger than the sum of its proper divisors (19797733).

331113131 is a wasteful number, since it uses less digits than its factorization.

331113131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17821.

The product of its digits is 81, while the sum is 17.

The square root of 331113131 is about 18196.5142541092. The cubic root of 331113131 is about 691.8184415435.

Adding to 331113131 its reverse (131311133), we get a palindrome (462424264).

The spelling of 331113131 in words is "three hundred thirty-one million, one hundred thirteen thousand, one hundred thirty-one".