3131423131 has 2 divisors, whose sum is σ = 3131423132. Its totient is φ = 3131423130.

The previous prime is 3131423129. The next prime is 3131423147. The reversal of 3131423131 is 1313241313.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3131423131 - 2¹ = 3131423129 is a prime.

It is a super-2 number, since 2×3131423131² = 19611621650723686322, which contains 22 as substring.

Together with 3131423129, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (3131423531) 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 as a sum of consecutive naturals, namely, 1565711565 + 1565711566.

It is an arithmetic number, because the mean of its divisors is an integer number (1565711566).

Almost surely, 2^3131423131 is an apocalyptic number.

3131423131 is a deficient number, since it is larger than the sum of its proper divisors (1).

3131423131 is an equidigital number, since it uses as much as digits as its factorization.

3131423131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 648, while the sum is 22.

The square root of 3131423131 is about 55959.1201771436. The cubic root of 3131423131 is about 1463.0098555551.

Adding to 3131423131 its reverse (1313241313), we get a palindrome (4444664444).

It can be divided in two parts, 31314 and 23131, that added together give a palindrome (54445).

The spelling of 3131423131 in words is "three billion, one hundred thirty-one million, four hundred twenty-three thousand, one hundred thirty-one".