3131120149 has 2 divisors, whose sum is σ = 3131120150. Its totient is φ = 3131120148.

The previous prime is 3131120141. The next prime is 3131120171. The reversal of 3131120149 is 9410211313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2304960100 + 826160049 = 48010^2 + 28743^2 .

It is a cyclic number.

It is not a de Polignac number, because 3131120149 - 2³ = 3131120141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3131120141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1565560074 + 1565560075.

It is an arithmetic number, because the mean of its divisors is an integer number (1565560075).

Almost surely, 2^3131120149 is an apocalyptic number.

It is an amenable number.

3131120149 is a deficient number, since it is larger than the sum of its proper divisors (1).

3131120149 is an equidigital number, since it uses as much as digits as its factorization.

3131120149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 3131120149 is about 55956.4129390010. The cubic root of 3131120149 is about 1462.9626693471.

The spelling of 3131120149 in words is "three billion, one hundred thirty-one million, one hundred twenty thousand, one hundred forty-nine".