2313131345 has 32 divisors (see below), whose sum is σ = 3345408000. Its totient is φ = 1499898816.

The previous prime is 2313131341. The next prime is 2313131351. The reversal of 2313131345 is 5431313132.

It is a cyclic number.

It is not a de Polignac number, because 2313131345 - 2² = 2313131341 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2313131341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 395432 + ... + 401238.

It is an arithmetic number, because the mean of its divisors is an integer number (104544000).

Almost surely, 2^2313131345 is an apocalyptic number.

It is an amenable number.

2313131345 is a deficient number, since it is larger than the sum of its proper divisors (1032276655).

2313131345 is a wasteful number, since it uses less digits than its factorization.

2313131345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6437.

The product of its digits is 3240, while the sum is 26.

The square root of 2313131345 is about 48095.0241189252. The cubic root of 2313131345 is about 1322.5134511921.

Adding to 2313131345 its reverse (5431313132), we get a palindrome (7744444477).

The spelling of 2313131345 in words is "two billion, three hundred thirteen million, one hundred thirty-one thousand, three hundred forty-five".