823376013 has 4 divisors (see below), whose sum is σ = 1097834688. Its totient is φ = 548917340.

The previous prime is 823376009. The next prime is 823376023. The reversal of 823376013 is 310673328.

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 823376013 - 2² = 823376009 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (823376023) 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, 137229333 + ... + 137229338.

It is an arithmetic number, because the mean of its divisors is an integer number (274458672).

Almost surely, 2^823376013 is an apocalyptic number.

It is an amenable number.

823376013 is a deficient number, since it is larger than the sum of its proper divisors (274458675).

823376013 is a wasteful number, since it uses less digits than its factorization.

823376013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274458674.

The product of its (nonzero) digits is 18144, while the sum is 33.

The square root of 823376013 is about 28694.5293218063. The cubic root of 823376013 is about 937.2729217845.

The spelling of 823376013 in words is "eight hundred twenty-three million, three hundred seventy-six thousand, thirteen".