321374699 has 4 divisors (see below), whose sum is σ = 335347536. Its totient is φ = 307401864.

The previous prime is 321374693. The next prime is 321374701. The reversal of 321374699 is 996473123.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 996473123 = 1847 ⋅539509.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-321374699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (321374693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6986384 + ... + 6986429.

It is an arithmetic number, because the mean of its divisors is an integer number (83836884).

Almost surely, 2^321374699 is an apocalyptic number.

321374699 is a deficient number, since it is larger than the sum of its proper divisors (13972837).

321374699 is a wasteful number, since it uses less digits than its factorization.

321374699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13972836.

The product of its digits is 244944, while the sum is 44.

The square root of 321374699 is about 17926.9266468070. The cubic root of 321374699 is about 684.9684387043.

It can be divided in two parts, 32 and 1374699, that added together give a palindrome (1374731).

The spelling of 321374699 in words is "three hundred twenty-one million, three hundred seventy-four thousand, six hundred ninety-nine".