3131311049 has 2 divisors, whose sum is σ = 3131311050. Its totient is φ = 3131311048.

The previous prime is 3131311019. The next prime is 3131311061. The reversal of 3131311049 is 9401131313.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1862526649 + 1268784400 = 43157^2 + 35620^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3131311049 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (3131311019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1565655524 + 1565655525.

It is an arithmetic number, because the mean of its divisors is an integer number (1565655525).

Almost surely, 2^3131311049 is an apocalyptic number.

It is an amenable number.

3131311049 is a deficient number, since it is larger than the sum of its proper divisors (1).

3131311049 is an equidigital number, since it uses as much as digits as its factorization.

3131311049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 3131311049 is about 55958.1187049743. The cubic root of 3131311049 is about 1462.9924003363.

The spelling of 3131311049 in words is "three billion, one hundred thirty-one million, three hundred eleven thousand, forty-nine".