331672013 has 4 divisors (see below), whose sum is σ = 331797600. Its totient is φ = 331546428.

The previous prime is 331671947. The next prime is 331672021. The reversal of 331672013 is 310276133.

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 331672013 - 2¹⁶ = 331606477 is a prime.

It is a super-2 number, since 2×331672013² = 220012648414944338, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331672513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58745 + ... + 64142.

It is an arithmetic number, because the mean of its divisors is an integer number (82949400).

Almost surely, 2^331672013 is an apocalyptic number.

It is an amenable number.

331672013 is a deficient number, since it is larger than the sum of its proper divisors (125587).

331672013 is a wasteful number, since it uses less digits than its factorization.

331672013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125586.

The product of its (nonzero) digits is 2268, while the sum is 26.

The square root of 331672013 is about 18211.8646217239. The cubic root of 331672013 is about 692.2074601840.

The spelling of 331672013 in words is "three hundred thirty-one million, six hundred seventy-two thousand, thirteen".