261431333417141 has 2 divisors, whose sum is σ = 261431333417142. Its totient is φ = 261431333417140.

The previous prime is 261431333417099. The next prime is 261431333417281. The reversal of 261431333417141 is 141714333134162.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 227196956886916 + 34234376530225 = 15073054^2 + 5851015^2 .

It is a cyclic number.

It is not a de Polignac number, because 261431333417141 - 2³⁰ = 261430259675317 is a prime.

It is a super-2 number, since 2×261431333417141² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 261431333417092 and 261431333417101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (261431333417041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130715666708570 + 130715666708571.

It is an arithmetic number, because the mean of its divisors is an integer number (130715666708571).

Almost surely, 2^{261431333417141} is an apocalyptic number.

It is an amenable number.

261431333417141 is a deficient number, since it is larger than the sum of its proper divisors (1).

261431333417141 is an equidigital number, since it uses as much as digits as its factorization.

261431333417141 is an evil number, because the sum of its binary digits is even.

The product of its digits is 435456, while the sum is 44.

The spelling of 261431333417141 in words is "two hundred sixty-one trillion, four hundred thirty-one billion, three hundred thirty-three million, four hundred seventeen thousand, one hundred forty-one".