131451105251 has 2 divisors, whose sum is σ = 131451105252. Its totient is φ = 131451105250.

The previous prime is 131451105229. The next prime is 131451105277. The reversal of 131451105251 is 152501154131.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (152501154131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 131451105251 - 2⁶ = 131451105187 is a prime.

It is not a weakly prime, because it can be changed into another prime (131451108251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65725552625 + 65725552626.

It is an arithmetic number, because the mean of its divisors is an integer number (65725552626).

Almost surely, 2^131451105251 is an apocalyptic number.

131451105251 is a deficient number, since it is larger than the sum of its proper divisors (1).

131451105251 is an equidigital number, since it uses as much as digits as its factorization.

131451105251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3000, while the sum is 29.

Adding to 131451105251 its reverse (152501154131), we get a palindrome (283952259382).

The spelling of 131451105251 in words is "one hundred thirty-one billion, four hundred fifty-one million, one hundred five thousand, two hundred fifty-one".