131303112123251 has 2 divisors, whose sum is σ = 131303112123252. Its totient is φ = 131303112123250.

The previous prime is 131303112123221. The next prime is 131303112123347. The reversal of 131303112123251 is 152321211303131.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 131303112123251 - 2⁶ = 131303112123187 is a prime.

It is not a weakly prime, because it can be changed into another prime (131303112123221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65651556061625 + 65651556061626.

It is an arithmetic number, because the mean of its divisors is an integer number (65651556061626).

Almost surely, 2^{131303112123251} is an apocalyptic number.

131303112123251 is a deficient number, since it is larger than the sum of its proper divisors (1).

131303112123251 is an equidigital number, since it uses as much as digits as its factorization.

131303112123251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 29.

Adding to 131303112123251 its reverse (152321211303131), we get a palindrome (283624323426382).

The spelling of 131303112123251 in words is "one hundred thirty-one trillion, three hundred three billion, one hundred twelve million, one hundred twenty-three thousand, two hundred fifty-one".