2311899412 has 12 divisors (see below), whose sum is σ = 4047832180. Its totient is φ = 1155375936.

The previous prime is 2311899407. The next prime is 2311899413. The reversal of 2311899412 is 2149981132.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1967277316 + 344622096 = 44354^2 + 18564^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2311899413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134313 + ... + 150544.

Almost surely, 2^2311899412 is an apocalyptic number.

It is an amenable number.

2311899412 is a deficient number, since it is larger than the sum of its proper divisors (1735932768).

2311899412 is a wasteful number, since it uses less digits than its factorization.

2311899412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286890 (or 286888 counting only the distinct ones).

The product of its digits is 31104, while the sum is 40.

The square root of 2311899412 is about 48082.2151320007. The cubic root of 2311899412 is about 1322.2786270450.

The spelling of 2311899412 in words is "two billion, three hundred eleven million, eight hundred ninety-nine thousand, four hundred twelve".