1391313084 has 48 divisors (see below), whose sum is σ = 3711993600. Its totient is φ = 397322496.

The previous prime is 1391313073. The next prime is 1391313097. The reversal of 1391313084 is 4803131931.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 324547 + ... + 328805.

It is an arithmetic number, because the mean of its divisors is an integer number (77333200).

Almost surely, 2^1391313084 is an apocalyptic number.

1391313084 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1391313084 is an abundant number, since it is smaller than the sum of its proper divisors (2320680516).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1391313084 is a wasteful number, since it uses less digits than its factorization.

1391313084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8162 (or 8160 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 1391313084 is about 37300.3094357138. The cubic root of 1391313084 is about 1116.3703405992.

The spelling of 1391313084 in words is "one billion, three hundred ninety-one million, three hundred thirteen thousand, eighty-four".