399231320211233 has 4 divisors (see below), whose sum is σ = 399588734106900. Its totient is φ = 398873906315568.

The previous prime is 399231320211209. The next prime is 399231320211247. The reversal of 399231320211233 is 332112023132993.

It is a happy number.

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 109344498931264 + 289886821279969 = 10456792^2 + 17026063^2 .

It is a cyclic number.

It is not a de Polignac number, because 399231320211233 - 2²⁰ = 399231319162657 is a prime.

It is a super-3 number, since 3×399231320211233³ (a number of 45 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (399231320211253) 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, 178706946158 + ... + 178706948391.

It is an arithmetic number, because the mean of its divisors is an integer number (99897183526725).

Almost surely, 2^{399231320211233} is an apocalyptic number.

It is an amenable number.

399231320211233 is a deficient number, since it is larger than the sum of its proper divisors (357413895667).

399231320211233 is a wasteful number, since it uses less digits than its factorization.

399231320211233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357413895666.

The product of its (nonzero) digits is 314928, while the sum is 44.

The spelling of 399231320211233 in words is "three hundred ninety-nine trillion, two hundred thirty-one billion, three hundred twenty million, two hundred eleven thousand, two hundred thirty-three".