396423231 has 4 divisors (see below), whose sum is σ = 528564312. Its totient is φ = 264282152.

The previous prime is 396423229. The next prime is 396423253. The reversal of 396423231 is 132324693.

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

It is a cyclic number.

It is not a de Polignac number, because 396423231 - 2¹ = 396423229 is a prime.

It is a super-2 number, since 2×396423231² = 314302756152958722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 396423192 and 396423201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (396423631) 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, 66070536 + ... + 66070541.

It is an arithmetic number, because the mean of its divisors is an integer number (132141078).

Almost surely, 2^396423231 is an apocalyptic number.

396423231 is a deficient number, since it is larger than the sum of its proper divisors (132141081).

396423231 is a wasteful number, since it uses less digits than its factorization.

396423231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132141080.

The product of its digits is 23328, while the sum is 33.

The square root of 396423231 is about 19910.3799813062. The cubic root of 396423231 is about 734.6035661221.

The spelling of 396423231 in words is "three hundred ninety-six million, four hundred twenty-three thousand, two hundred thirty-one".