131312227 has 2 divisors, whose sum is σ = 131312228. Its totient is φ = 131312226.

The previous prime is 131312213. The next prime is 131312243. The reversal of 131312227 is 722213131.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131312227 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 131312198 and 131312207.

It is not a weakly prime, because it can be changed into another prime (131312257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65656113 + 65656114.

It is an arithmetic number, because the mean of its divisors is an integer number (65656114).

Almost surely, 2^131312227 is an apocalyptic number.

131312227 is a deficient number, since it is larger than the sum of its proper divisors (1).

131312227 is an equidigital number, since it uses as much as digits as its factorization.

131312227 is an evil number, because the sum of its binary digits is even.

The product of its digits is 504, while the sum is 22.

The square root of 131312227 is about 11459.1547244987. The cubic root of 131312227 is about 508.2784797450.

Adding to 131312227 its reverse (722213131), we get a palindrome (853525358).

The spelling of 131312227 in words is "one hundred thirty-one million, three hundred twelve thousand, two hundred twenty-seven".