331274665 has 16 divisors (see below), whose sum is σ = 422016912. Its totient is φ = 248776704.

The previous prime is 331274651. The next prime is 331274683. The reversal of 331274665 is 566472133.

It can be written as a sum of positive squares in 8 ways, for example, as 80622441 + 250652224 = 8979^2 + 15832^2 .

It is a cyclic number.

It is not a de Polignac number, because 331274665 - 2¹³ = 331266473 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28837 + ... + 38653.

It is an arithmetic number, because the mean of its divisors is an integer number (26376057).

Almost surely, 2^331274665 is an apocalyptic number.

It is an amenable number.

331274665 is a deficient number, since it is larger than the sum of its proper divisors (90742247).

331274665 is a wasteful number, since it uses less digits than its factorization.

331274665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10236.

The product of its digits is 90720, while the sum is 37.

The square root of 331274665 is about 18200.9523102501. The cubic root of 331274665 is about 691.9309247824.

It can be divided in two parts, 3312 and 74665, that added together give a palindrome (77977).

The spelling of 331274665 in words is "three hundred thirty-one million, two hundred seventy-four thousand, six hundred sixty-five".