399022310231 has 16 divisors (see below), whose sum is σ = 431408769984. Its totient is φ = 368071570944.

The previous prime is 399022310209. The next prime is 399022310249. The reversal of 399022310231 is 132013220993.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 399022310231 - 2¹⁰ = 399022309207 is a prime.

It is a super-2 number, since 2×399022310231² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 399022310191 and 399022310200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399022312231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1978556 + ... + 2170881.

It is an arithmetic number, because the mean of its divisors is an integer number (26963048124).

Almost surely, 2^399022310231 is an apocalyptic number.

399022310231 is a deficient number, since it is larger than the sum of its proper divisors (32386459753).

399022310231 is a wasteful number, since it uses less digits than its factorization.

399022310231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4149610.

The product of its (nonzero) digits is 17496, while the sum is 35.

The spelling of 399022310231 in words is "three hundred ninety-nine billion, twenty-two million, three hundred ten thousand, two hundred thirty-one".