2311325543 has 4 divisors (see below), whose sum is σ = 2311484520. Its totient is φ = 2311166568.

The previous prime is 2311325521. The next prime is 2311325557. The reversal of 2311325543 is 3455231132.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2311325543 - 2¹² = 2311321447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2311325503) 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, 55208 + ... + 87581.

It is an arithmetic number, because the mean of its divisors is an integer number (577871130).

Almost surely, 2^2311325543 is an apocalyptic number.

2311325543 is a deficient number, since it is larger than the sum of its proper divisors (158977).

2311325543 is a wasteful number, since it uses less digits than its factorization.

2311325543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158976.

The product of its digits is 10800, while the sum is 29.

The square root of 2311325543 is about 48076.2471809105. The cubic root of 2311325543 is about 1322.1692108793.

Adding to 2311325543 its reverse (3455231132), we get a palindrome (5766556675).

The spelling of 2311325543 in words is "two billion, three hundred eleven million, three hundred twenty-five thousand, five hundred forty-three".