2311121077 has 2 divisors, whose sum is σ = 2311121078. Its totient is φ = 2311121076.

The previous prime is 2311121051. The next prime is 2311121081. The reversal of 2311121077 is 7701211132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1780924401 + 530196676 = 42201^2 + 23026^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2311121077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2311121027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1155560538 + 1155560539.

It is an arithmetic number, because the mean of its divisors is an integer number (1155560539).

Almost surely, 2^2311121077 is an apocalyptic number.

It is an amenable number.

2311121077 is a deficient number, since it is larger than the sum of its proper divisors (1).

2311121077 is an equidigital number, since it uses as much as digits as its factorization.

2311121077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 588, while the sum is 25.

The square root of 2311121077 is about 48074.1206575846. The cubic root of 2311121077 is about 1322.1302221956.

The spelling of 2311121077 in words is "two billion, three hundred eleven million, one hundred twenty-one thousand, seventy-seven".