316345491840 has 128 divisors (see below), whose sum is σ = 1152401483520. Its totient is φ = 72307537920.

The previous prime is 316345491799. The next prime is 316345491853. The reversal of 316345491840 is 48194543613.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 316345491840.

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, 11755366 + ... + 11782245.

It is an arithmetic number, because the mean of its divisors is an integer number (9003136590).

Almost surely, 2^316345491840 is an apocalyptic number.

316345491840 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

316345491840 is an abundant number, since it is smaller than the sum of its proper divisors (836055991680).

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

316345491840 is a wasteful number, since it uses less digits than its factorization.

316345491840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23537640 (or 23537628 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 48.

The spelling of 316345491840 in words is "three hundred sixteen billion, three hundred forty-five million, four hundred ninety-one thousand, eight hundred forty".