2101343977 has 2 divisors, whose sum is σ = 2101343978. Its totient is φ = 2101343976.

The previous prime is 2101343971. The next prime is 2101344001. The reversal of 2101343977 is 7793431012.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1920280041 + 181063936 = 43821^2 + 13456^2 .

It is a cyclic number.

It is not a de Polignac number, because 2101343977 - 2²³ = 2092955369 is a prime.

It is not a weakly prime, because it can be changed into another prime (2101343971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050671988 + 1050671989.

It is an arithmetic number, because the mean of its divisors is an integer number (1050671989).

Almost surely, 2^2101343977 is an apocalyptic number.

It is an amenable number.

2101343977 is a deficient number, since it is larger than the sum of its proper divisors (1).

2101343977 is an equidigital number, since it uses as much as digits as its factorization.

2101343977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31752, while the sum is 37.

The square root of 2101343977 is about 45840.4185953837. The cubic root of 2101343977 is about 1280.8522922764.

Adding to 2101343977 its reverse (7793431012), we get a palindrome (9894774989).

The spelling of 2101343977 in words is "two billion, one hundred one million, three hundred forty-three thousand, nine hundred seventy-seven".