2343577981 has 4 divisors (see below), whose sum is σ = 2343844864. Its totient is φ = 2343311100.

The previous prime is 2343577979. The next prime is 2343577987. The reversal of 2343577981 is 1897753432.

2343577981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2343577981 - 2¹ = 2343577979 is a prime.

It is a super-2 number, since 2×2343577981² = 10984715506056072722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2343577987) 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, 119805 + ... + 137986.

It is an arithmetic number, because the mean of its divisors is an integer number (585961216).

Almost surely, 2^2343577981 is an apocalyptic number.

It is an amenable number.

2343577981 is a deficient number, since it is larger than the sum of its proper divisors (266883).

2343577981 is an equidigital number, since it uses as much as digits as its factorization.

2343577981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266882.

The product of its digits is 1270080, while the sum is 49.

The square root of 2343577981 is about 48410.5151904005. The cubic root of 2343577981 is about 1328.2907133562.

The spelling of 2343577981 in words is "two billion, three hundred forty-three million, five hundred seventy-seven thousand, nine hundred eighty-one".