331616723 has 4 divisors (see below), whose sum is σ = 332992968. Its totient is φ = 330240480.

The previous prime is 331616689. The next prime is 331616741. The reversal of 331616723 is 327616133.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-331616723 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 331616723.

It is not an unprimeable number, because it can be changed into a prime (331616123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 687761 + ... + 688242.

It is an arithmetic number, because the mean of its divisors is an integer number (83248242).

Almost surely, 2^331616723 is an apocalyptic number.

331616723 is a deficient number, since it is larger than the sum of its proper divisors (1376245).

331616723 is a wasteful number, since it uses less digits than its factorization.

331616723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1376244.

The product of its digits is 13608, while the sum is 32.

The square root of 331616723 is about 18210.3465919790. The cubic root of 331616723 is about 692.1689941936.

The spelling of 331616723 in words is "three hundred thirty-one million, six hundred sixteen thousand, seven hundred twenty-three".