1380334831 has 4 divisors (see below), whose sum is σ = 1381942600. Its totient is φ = 1378727064.

The previous prime is 1380334807. The next prime is 1380334867. The reversal of 1380334831 is 1384330831.

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 1380334831 - 2²⁹ = 843463919 is a prime.

It is a super-2 number, since 2×1380334831² = 3810648491343597122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1380334231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 802596 + ... + 804313.

It is an arithmetic number, because the mean of its divisors is an integer number (345485650).

Almost surely, 2^1380334831 is an apocalyptic number.

1380334831 is a deficient number, since it is larger than the sum of its proper divisors (1607769).

1380334831 is an equidigital number, since it uses as much as digits as its factorization.

1380334831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1607768.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 1380334831 is about 37152.8576424479. The cubic root of 1380334831 is about 1113.4263175971.

The spelling of 1380334831 in words is "one billion, three hundred eighty million, three hundred thirty-four thousand, eight hundred thirty-one".