131322251 has 2 divisors, whose sum is σ = 131322252. Its totient is φ = 131322250.

The previous prime is 131322227. The next prime is 131322271. The reversal of 131322251 is 152223131.

It is an a-pointer prime, because the next prime (131322271) can be obtained adding 131322251 to its sum of digits (20).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 131322251 - 2⁶ = 131322187 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (131322271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65661125 + 65661126.

It is an arithmetic number, because the mean of its divisors is an integer number (65661126).

Almost surely, 2^131322251 is an apocalyptic number.

131322251 is a deficient number, since it is larger than the sum of its proper divisors (1).

131322251 is an equidigital number, since it uses as much as digits as its factorization.

131322251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 360, while the sum is 20.

The square root of 131322251 is about 11459.5920957074. The cubic root of 131322251 is about 508.2914129246.

Adding to 131322251 its reverse (152223131), we get a palindrome (283545382).

The spelling of 131322251 in words is "one hundred thirty-one million, three hundred twenty-two thousand, two hundred fifty-one".