329140813 has 4 divisors (see below), whose sum is σ = 329281660. Its totient is φ = 328999968.

The previous prime is 329140771. The next prime is 329140829. The reversal of 329140813 is 318041923.

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

It can be written as a sum of positive squares in 2 ways, for example, as 128550244 + 200590569 = 11338^2 + 14163^2 .

It is a cyclic number.

It is not a de Polignac number, because 329140813 - 2²⁵ = 295586381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (329140843) 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, 66858 + ... + 71611.

It is an arithmetic number, because the mean of its divisors is an integer number (82320415).

Almost surely, 2^329140813 is an apocalyptic number.

It is an amenable number.

329140813 is a deficient number, since it is larger than the sum of its proper divisors (140847).

329140813 is a wasteful number, since it uses less digits than its factorization.

329140813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140846.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 329140813 is about 18142.2383679633. The cubic root of 329140813 is about 690.4420698609.

The spelling of 329140813 in words is "three hundred twenty-nine million, one hundred forty thousand, eight hundred thirteen".