3131628061 has 2 divisors, whose sum is σ = 3131628062. Its totient is φ = 3131628060.

The previous prime is 3131628007. The next prime is 3131628077. The reversal of 3131628061 is 1608261313.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3110292900 + 21335161 = 55770^2 + 4619^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3131628061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3131622061) 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, 1565814030 + 1565814031.

It is an arithmetic number, because the mean of its divisors is an integer number (1565814031).

Almost surely, 2^3131628061 is an apocalyptic number.

It is an amenable number.

3131628061 is a deficient number, since it is larger than the sum of its proper divisors (1).

3131628061 is an equidigital number, since it uses as much as digits as its factorization.

3131628061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 3131628061 is about 55960.9512160042. The cubic root of 3131628061 is about 1463.0417694866.

Adding to 3131628061 its reverse (1608261313), we get a palindrome (4739889374).

The spelling of 3131628061 in words is "three billion, one hundred thirty-one million, six hundred twenty-eight thousand, sixty-one".