3123510412261 has 2 divisors, whose sum is σ = 3123510412262. Its totient is φ = 3123510412260.

The previous prime is 3123510412229. The next prime is 3123510412343. The reversal of 3123510412261 is 1622140153213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1870039840036 + 1253470572225 = 1367494^2 + 1119585^2 .

It is a cyclic number.

It is not a de Polignac number, because 3123510412261 - 2⁵ = 3123510412229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3123510452261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1561755206130 + 1561755206131.

It is an arithmetic number, because the mean of its divisors is an integer number (1561755206131).

Almost surely, 2^{3123510412261} is an apocalyptic number.

It is an amenable number.

3123510412261 is a deficient number, since it is larger than the sum of its proper divisors (1).

3123510412261 is an equidigital number, since it uses as much as digits as its factorization.

3123510412261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 31.

Adding to 3123510412261 its reverse (1622140153213), we get a palindrome (4745650565474).

The spelling of 3123510412261 in words is "three trillion, one hundred twenty-three billion, five hundred ten million, four hundred twelve thousand, two hundred sixty-one".