3131440323 has 16 divisors (see below), whose sum is σ = 4566314496. Its totient is φ = 1893054240.

The previous prime is 3131440321. The next prime is 3131440327. The reversal of 3131440323 is 3230441313.

It is not a de Polignac number, because 3131440323 - 2¹ = 3131440321 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3131440293 and 3131440302.

It is not an unprimeable number, because it can be changed into a prime (3131440321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 106411 + ... + 132612.

It is an arithmetic number, because the mean of its divisors is an integer number (285394656).

Almost surely, 2^3131440323 is an apocalyptic number.

3131440323 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

3131440323 is a deficient number, since it is larger than the sum of its proper divisors (1434874173).

3131440323 is a wasteful number, since it uses less digits than its factorization.

3131440323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239434.

The product of its (nonzero) digits is 2592, while the sum is 24.

The square root of 3131440323 is about 55959.2737890691. The cubic root of 3131440323 is about 1463.0125329341.

Adding to 3131440323 its reverse (3230441313), we get a palindrome (6361881636).

The spelling of 3131440323 in words is "three billion, one hundred thirty-one million, four hundred forty thousand, three hundred twenty-three".