2311331389 has 2 divisors, whose sum is σ = 2311331390. Its totient is φ = 2311331388.

The previous prime is 2311331377. The next prime is 2311331401. The reversal of 2311331389 is 9831331132.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (2311331377) and next prime (2311331401).

It can be written as a sum of positive squares in only one way, i.e., 1748076100 + 563255289 = 41810^2 + 23733^2 .

It is a cyclic number.

It is not a de Polignac number, because 2311331389 - 2⁵ = 2311331357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2311338389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1155665694 + 1155665695.

It is an arithmetic number, because the mean of its divisors is an integer number (1155665695).

Almost surely, 2^2311331389 is an apocalyptic number.

It is an amenable number.

2311331389 is a deficient number, since it is larger than the sum of its proper divisors (1).

2311331389 is an equidigital number, since it uses as much as digits as its factorization.

2311331389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11664, while the sum is 34.

The square root of 2311331389 is about 48076.3079801268. The cubic root of 2311331389 is about 1322.1703255925.

The spelling of 2311331389 in words is "two billion, three hundred eleven million, three hundred thirty-one thousand, three hundred eighty-nine".