331679723 has 4 divisors (see below), whose sum is σ = 331838808. Its totient is φ = 331520640.

The previous prime is 331679717. The next prime is 331679749. The reversal of 331679723 is 327976133.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 327976133 = 1721 ⋅190573.

It is a cyclic number.

It is not a de Polignac number, because 331679723 - 2¹⁸ = 331417579 is a prime.

It is a super-2 number, since 2×331679723² = 220022877298713458, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (331679123) 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, 76373 + ... + 80598.

It is an arithmetic number, because the mean of its divisors is an integer number (82959702).

Almost surely, 2^331679723 is an apocalyptic number.

331679723 is a deficient number, since it is larger than the sum of its proper divisors (159085).

331679723 is a wasteful number, since it uses less digits than its factorization.

331679723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159084.

The product of its digits is 142884, while the sum is 41.

The square root of 331679723 is about 18212.0762956891. The cubic root of 331679723 is about 692.2128237941.

The spelling of 331679723 in words is "three hundred thirty-one million, six hundred seventy-nine thousand, seven hundred twenty-three".