1397698313 has 8 divisors (see below), whose sum is σ = 1533577536. Its totient is φ = 1263288400.

The previous prime is 1397698301. The next prime is 1397698363. The reversal of 1397698313 is 3138967931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1397698313 - 2¹⁰ = 1397697289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1397698363) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 365333 + ... + 369138.

It is an arithmetic number, because the mean of its divisors is an integer number (191697192).

Almost surely, 2^1397698313 is an apocalyptic number.

It is an amenable number.

1397698313 is a deficient number, since it is larger than the sum of its proper divisors (135879223).

1397698313 is a wasteful number, since it uses less digits than its factorization.

1397698313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 734655.

The product of its digits is 734832, while the sum is 50.

The square root of 1397698313 is about 37385.8036291852. The cubic root of 1397698313 is about 1118.0755410889.

The spelling of 1397698313 in words is "one billion, three hundred ninety-seven million, six hundred ninety-eight thousand, three hundred thirteen".