1390017331 has 4 divisors (see below), whose sum is σ = 1395302832. Its totient is φ = 1384731832.

The previous prime is 1390017313. The next prime is 1390017337. The reversal of 1390017331 is 1337100931.

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 1390017331 - 2¹¹ = 1390015283 is a prime.

It is a super-2 number, since 2×1390017331² = 3864296360960727122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1390017331.

It is not an unprimeable number, because it can be changed into a prime (1390017337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2642356 + ... + 2642881.

It is an arithmetic number, because the mean of its divisors is an integer number (348825708).

Almost surely, 2^1390017331 is an apocalyptic number.

1390017331 is a deficient number, since it is larger than the sum of its proper divisors (5285501).

1390017331 is an equidigital number, since it uses as much as digits as its factorization.

1390017331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5285500.

The product of its (nonzero) digits is 1701, while the sum is 28.

The square root of 1390017331 is about 37282.9361907026. The cubic root of 1390017331 is about 1116.0236682052.

The spelling of 1390017331 in words is "one billion, three hundred ninety million, seventeen thousand, three hundred thirty-one".