3131444431 has 2 divisors, whose sum is σ = 3131444432. Its totient is φ = 3131444430.

The previous prime is 3131444417. The next prime is 3131444443. The reversal of 3131444431 is 1344441313.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3131444431 - 2¹⁷ = 3131313359 is a prime.

It is a super-2 number, since 2×3131444431² = 19611888448881827522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3131444431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3131424431) 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 as a sum of consecutive naturals, namely, 1565722215 + 1565722216.

It is an arithmetic number, because the mean of its divisors is an integer number (1565722216).

Almost surely, 2^3131444431 is an apocalyptic number.

3131444431 is a deficient number, since it is larger than the sum of its proper divisors (1).

3131444431 is an equidigital number, since it uses as much as digits as its factorization.

3131444431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6912, while the sum is 28.

The square root of 3131444431 is about 55959.3104943226. The cubic root of 3131444431 is about 1463.0131726879.

Adding to 3131444431 its reverse (1344441313), we get a palindrome (4475885744).

The spelling of 3131444431 in words is "three billion, one hundred thirty-one million, four hundred forty-four thousand, four hundred thirty-one".