1397306233 has 4 divisors (see below), whose sum is σ = 1397823988. Its totient is φ = 1396788480.

The previous prime is 1397306167. The next prime is 1397306237. The reversal of 1397306233 is 3326037931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3326037931 = 8431 ⋅394501.

It can be written as a sum of positive squares in 2 ways, for example, as 1272134889 + 125171344 = 35667^2 + 11188^2 .

It is a cyclic number.

It is not a de Polignac number, because 1397306233 - 2¹³ = 1397298041 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1397306192 and 1397306201.

It is not an unprimeable number, because it can be changed into a prime (1397306237) 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, 254808 + ... + 260233.

It is an arithmetic number, because the mean of its divisors is an integer number (349455997).

Almost surely, 2^1397306233 is an apocalyptic number.

It is an amenable number.

1397306233 is a deficient number, since it is larger than the sum of its proper divisors (517755).

1397306233 is an equidigital number, since it uses as much as digits as its factorization.

1397306233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 517754.

The product of its (nonzero) digits is 61236, while the sum is 37.

The square root of 1397306233 is about 37380.5595597498. The cubic root of 1397306233 is about 1117.9709844162.

The spelling of 1397306233 in words is "one billion, three hundred ninety-seven million, three hundred six thousand, two hundred thirty-three".