3131143031 has 2 divisors, whose sum is σ = 3131143032. Its totient is φ = 3131143030.

The previous prime is 3131142991. The next prime is 3131143069. The reversal of 3131143031 is 1303411313.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3131143031 is a prime.

It is a super-2 number, since 2×3131143031² = 19608113361159733922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3131142994 and 3131143012.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3131143231) 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, 1565571515 + 1565571516.

It is an arithmetic number, because the mean of its divisors is an integer number (1565571516).

Almost surely, 2^3131143031 is an apocalyptic number.

3131143031 is a deficient number, since it is larger than the sum of its proper divisors (1).

3131143031 is an equidigital number, since it uses as much as digits as its factorization.

3131143031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 3131143031 is about 55956.6174013405. The cubic root of 3131143031 is about 1462.9662330803.

Adding to 3131143031 its reverse (1303411313), we get a palindrome (4434554344).

The spelling of 3131143031 in words is "three billion, one hundred thirty-one million, one hundred forty-three thousand, thirty-one".