331113609 has 8 divisors (see below), whose sum is σ = 490538720. Its totient is φ = 220742388.

The previous prime is 331113599. The next prime is 331113613. The reversal of 331113609 is 906311133.

331113609 is a `hidden beast` number, since 33 + 11 + 13 + 609 = 666.

It is not a de Polignac number, because 331113609 - 2⁴ = 331113593 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 12263467 = 331113609 / (3 + 3 + 1 + 1 + 1 + 3 + 6 + 0 + 9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (331113659) 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, 6131707 + ... + 6131760.

It is an arithmetic number, because the mean of its divisors is an integer number (61317340).

Almost surely, 2^331113609 is an apocalyptic number.

It is an amenable number.

331113609 is a deficient number, since it is larger than the sum of its proper divisors (159425111).

331113609 is a wasteful number, since it uses less digits than its factorization.

331113609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12263476 (or 12263470 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 27.

The square root of 331113609 is about 18196.5273884882. The cubic root of 331113609 is about 691.8187744499.

The spelling of 331113609 in words is "three hundred thirty-one million, one hundred thirteen thousand, six hundred nine".