2311325621 has 16 divisors (see below), whose sum is σ = 2610636288. Its totient is φ = 2027289600.

The previous prime is 2311325609. The next prime is 2311325629. The reversal of 2311325621 is 1265231132.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2311325621 - 2⁶ = 2311325557 is a prime.

It is a super-2 number, since 2×2311325621² = 10684452252582071282, which contains 22 as substring.

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2311325629) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104861 + ... + 124973.

It is an arithmetic number, because the mean of its divisors is an integer number (163164768).

Almost surely, 2^2311325621 is an apocalyptic number.

It is an amenable number.

2311325621 is a deficient number, since it is larger than the sum of its proper divisors (299310667).

2311325621 is a wasteful number, since it uses less digits than its factorization.

2311325621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20492.

The product of its digits is 2160, while the sum is 26.

The square root of 2311325621 is about 48076.2479921218. The cubic root of 2311325621 is about 1322.1692257524.

Adding to 2311325621 its reverse (1265231132), we get a palindrome (3576556753).

The spelling of 2311325621 in words is "two billion, three hundred eleven million, three hundred twenty-five thousand, six hundred twenty-one".