261026415230131 has 2 divisors, whose sum is σ = 261026415230132. Its totient is φ = 261026415230130.

The previous prime is 261026415230093. The next prime is 261026415230167. The reversal of 261026415230131 is 131032514620162.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 261026415230131 - 2¹³ = 261026415221939 is a prime.

It is a super-2 number, since 2×261026415230131² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (261026415230171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130513207615065 + 130513207615066.

It is an arithmetic number, because the mean of its divisors is an integer number (130513207615066).

Almost surely, 2^{261026415230131} is an apocalyptic number.

261026415230131 is a deficient number, since it is larger than the sum of its proper divisors (1).

261026415230131 is an equidigital number, since it uses as much as digits as its factorization.

261026415230131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 37.

Adding to 261026415230131 its reverse (131032514620162), we get a palindrome (392058929850293).

The spelling of 261026415230131 in words is "two hundred sixty-one trillion, twenty-six billion, four hundred fifteen million, two hundred thirty thousand, one hundred thirty-one".