131523251 has 2 divisors, whose sum is σ = 131523252. Its totient is φ = 131523250.

The previous prime is 131523193. The next prime is 131523257. The reversal of 131523251 is 152325131.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 131523251 - 2¹⁰ = 131522227 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (131523257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65761625 + 65761626.

It is an arithmetic number, because the mean of its divisors is an integer number (65761626).

Almost surely, 2^131523251 is an apocalyptic number.

131523251 is a deficient number, since it is larger than the sum of its proper divisors (1).

131523251 is an equidigital number, since it uses as much as digits as its factorization.

131523251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 900, while the sum is 23.

The square root of 131523251 is about 11468.3586881471. The cubic root of 131523251 is about 508.5506086374.

Adding to 131523251 its reverse (152325131), we get a palindrome (283848382).

The spelling of 131523251 in words is "one hundred thirty-one million, five hundred twenty-three thousand, two hundred fifty-one".