2340528391 has 2 divisors, whose sum is σ = 2340528392. Its totient is φ = 2340528390.

The previous prime is 2340528383. The next prime is 2340528401. The reversal of 2340528391 is 1938250432.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2340528391 - 2³ = 2340528383 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2340528391.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2340528361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1170264195 + 1170264196.

It is an arithmetic number, because the mean of its divisors is an integer number (1170264196).

Almost surely, 2^2340528391 is an apocalyptic number.

2340528391 is a deficient number, since it is larger than the sum of its proper divisors (1).

2340528391 is an equidigital number, since it uses as much as digits as its factorization.

2340528391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 2340528391 is about 48379.0077512964. The cubic root of 2340528391 is about 1327.7143154445.

The spelling of 2340528391 in words is "two billion, three hundred forty million, five hundred twenty-eight thousand, three hundred ninety-one".