1321617297 has 48 divisors (see below), whose sum is σ = 2383955840. Its totient is φ = 633726720.

The previous prime is 1321617289. The next prime is 1321617313. The reversal of 1321617297 is 7927161231.

It is not a de Polignac number, because 1321617297 - 2³ = 1321617289 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (1321617197) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13029 + ... + 53037.

Almost surely, 2^1321617297 is an apocalyptic number.

It is an amenable number.

1321617297 is a deficient number, since it is larger than the sum of its proper divisors (1062338543).

1321617297 is a wasteful number, since it uses less digits than its factorization.

1321617297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40054 (or 40043 counting only the distinct ones).

The product of its digits is 31752, while the sum is 39.

The square root of 1321617297 is about 36354.0547532184. The cubic root of 1321617297 is about 1097.4091357813.

The spelling of 1321617297 in words is "one billion, three hundred twenty-one million, six hundred seventeen thousand, two hundred ninety-seven".