396304231 has 4 divisors (see below), whose sum is σ = 397273600. Its totient is φ = 395334864.

The previous prime is 396304229. The next prime is 396304241. The reversal of 396304231 is 132403693.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132403693 = 9791 ⋅13523.

It is a cyclic number.

It is not a de Polignac number, because 396304231 - 2¹ = 396304229 is a prime.

It is a super-2 number, since 2×396304231² = 314114087017002722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 396304193 and 396304202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (396304241) 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, 484071 + ... + 484888.

It is an arithmetic number, because the mean of its divisors is an integer number (99318400).

Almost surely, 2^396304231 is an apocalyptic number.

396304231 is a deficient number, since it is larger than the sum of its proper divisors (969369).

396304231 is an equidigital number, since it uses as much as digits as its factorization.

396304231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 969368.

The product of its (nonzero) digits is 11664, while the sum is 31.

The square root of 396304231 is about 19907.3913660228. The cubic root of 396304231 is about 734.5300532986.

The spelling of 396304231 in words is "three hundred ninety-six million, three hundred four thousand, two hundred thirty-one".