2313212240 has 20 divisors (see below), whose sum is σ = 5378218644. Its totient is φ = 925284864.

The previous prime is 2313212221. The next prime is 2313212249. The reversal of 2313212240 is 422123132.

It can be written as a sum of positive squares in 2 ways, for example, as 320839744 + 1992372496 = 17912^2 + 44636^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2313212249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14457497 + ... + 14457656.

Almost surely, 2^2313212240 is an apocalyptic number.

2313212240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2313212240 is an abundant number, since it is smaller than the sum of its proper divisors (3065006404).

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

2313212240 is a wasteful number, since it uses less digits than its factorization.

2313212240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28915166 (or 28915160 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 2313212240 is about 48095.8651029379. The cubic root of 2313212240 is about 1322.5288680250.

Adding to 2313212240 its reverse (422123132), we get a palindrome (2735335372).

The spelling of 2313212240 in words is "two billion, three hundred thirteen million, two hundred twelve thousand, two hundred forty".