2351232240 has 80 divisors (see below), whose sum is σ = 8330085888. Its totient is φ = 537424128.

The previous prime is 2351232239. The next prime is 2351232263. The reversal of 2351232240 is 422321532.

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 (24).

It is a self number, because there is not a number n which added to its sum of digits gives 2351232240.

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, 698092 + ... + 701451.

Almost surely, 2^2351232240 is an apocalyptic number.

2351232240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2351232240 is an abundant number, since it is smaller than the sum of its proper divisors (5978853648).

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

2351232240 is a wasteful number, since it uses less digits than its factorization.

2351232240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1399566 (or 1399560 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 2351232240 is about 48489.5064936735. The cubic root of 2351232240 is about 1329.7352328779.

Adding to 2351232240 its reverse (422321532), we get a palindrome (2773553772).

The spelling of 2351232240 in words is "two billion, three hundred fifty-one million, two hundred thirty-two thousand, two hundred forty".