397031233 has 4 divisors (see below), whose sum is σ = 397134468. Its totient is φ = 396928000.

The previous prime is 397031227. The next prime is 397031251. The reversal of 397031233 is 332130793.

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 8625969 + 388405264 = 2937^2 + 19708^2 .

It is a cyclic number.

It is not a de Polignac number, because 397031233 - 2¹³ = 397023041 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 397031195 and 397031204.

It is not an unprimeable number, because it can be changed into a prime (397031273) 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, 45616 + ... + 53617.

It is an arithmetic number, because the mean of its divisors is an integer number (99283617).

Almost surely, 2^397031233 is an apocalyptic number.

It is an amenable number.

397031233 is a deficient number, since it is larger than the sum of its proper divisors (103235).

397031233 is an equidigital number, since it uses as much as digits as its factorization.

397031233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103234.

The product of its (nonzero) digits is 10206, while the sum is 31.

The square root of 397031233 is about 19925.6425994245. The cubic root of 397031233 is about 734.9789328652.

The spelling of 397031233 in words is "three hundred ninety-seven million, thirty-one thousand, two hundred thirty-three".