2316521240 has 32 divisors (see below), whose sum is σ = 5686007760. Its totient is φ = 842371200.

The previous prime is 2316521239. The next prime is 2316521243. The reversal of 2316521240 is 421256132.

It is a happy number.

It is a super-2 number, since 2×2316521240² = 10732541310742275200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2316521243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2631971 + ... + 2632850.

Almost surely, 2^2316521240 is an apocalyptic number.

2316521240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2316521240 is an abundant number, since it is smaller than the sum of its proper divisors (3369486520).

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

2316521240 is a wasteful number, since it uses less digits than its factorization.

2316521240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5264843 (or 5264839 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 2316521240 is about 48130.2528561818. The cubic root of 2316521240 is about 1323.1591838684.

Adding to 2316521240 its reverse (421256132), we get a palindrome (2737777372).

The spelling of 2316521240 in words is "two billion, three hundred sixteen million, five hundred twenty-one thousand, two hundred forty".