2391319040 has 80 divisors (see below), whose sum is σ = 6254867520. Its totient is φ = 869560320.

The previous prime is 2391319037. The next prime is 2391319067. The reversal of 2391319040 is 409131932.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 2391318988 and 2391319006.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14300 + ... + 70619.

It is an arithmetic number, because the mean of its divisors is an integer number (78185844).

Almost surely, 2^2391319040 is an apocalyptic number.

2391319040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2391319040 is an abundant number, since it is smaller than the sum of its proper divisors (3863548480).

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

2391319040 is an equidigital number, since it uses as much as digits as its factorization.

2391319040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84953 (or 84937 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 2391319040 is about 48901.1149157154. The cubic root of 2391319040 is about 1337.2496942141.

The spelling of 2391319040 in words is "two billion, three hundred ninety-one million, three hundred nineteen thousand, forty".