2311121051 has 2 divisors, whose sum is σ = 2311121052. Its totient is φ = 2311121050.

The previous prime is 2311121039. The next prime is 2311121077. The reversal of 2311121051 is 1501211132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2311121051 - 2¹⁰ = 2311120027 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (2311121081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1155560525 + 1155560526.

It is an arithmetic number, because the mean of its divisors is an integer number (1155560526).

Almost surely, 2^2311121051 is an apocalyptic number.

2311121051 is a deficient number, since it is larger than the sum of its proper divisors (1).

2311121051 is an equidigital number, since it uses as much as digits as its factorization.

2311121051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60, while the sum is 17.

The square root of 2311121051 is about 48074.1203871688. The cubic root of 2311121051 is about 1322.1302172376.

Adding to 2311121051 its reverse (1501211132), we get a palindrome (3812332183).

The spelling of 2311121051 in words is "two billion, three hundred eleven million, one hundred twenty-one thousand, fifty-one".