2343129781 has 2 divisors, whose sum is σ = 2343129782. Its totient is φ = 2343129780.

The previous prime is 2343129773. The next prime is 2343129847. The reversal of 2343129781 is 1879213432.

2343129781 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2338592881 + 4536900 = 48359^2 + 2130^2 .

It is a cyclic number.

It is not a de Polignac number, because 2343129781 - 2³ = 2343129773 is a prime.

It is a super-2 number, since 2×2343129781² = 10980514341218215922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2343129731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1171564890 + 1171564891.

It is an arithmetic number, because the mean of its divisors is an integer number (1171564891).

Almost surely, 2^2343129781 is an apocalyptic number.

It is an amenable number.

2343129781 is a deficient number, since it is larger than the sum of its proper divisors (1).

2343129781 is an equidigital number, since it uses as much as digits as its factorization.

2343129781 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 40.

The square root of 2343129781 is about 48405.8858094757. The cubic root of 2343129781 is about 1328.2060311795.

The spelling of 2343129781 in words is "two billion, three hundred forty-three million, one hundred twenty-nine thousand, seven hundred eighty-one".