131225113 has 2 divisors, whose sum is σ = 131225114. Its totient is φ = 131225112.

The previous prime is 131225063. The next prime is 131225117. The reversal of 131225113 is 311522131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 102151449 + 29073664 = 10107^2 + 5392^2 .

It is a cyclic number.

It is not a de Polignac number, because 131225113 - 2⁹ = 131224601 is a prime.

It is not a weakly prime, because it can be changed into another prime (131225117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65612556 + 65612557.

It is an arithmetic number, because the mean of its divisors is an integer number (65612557).

Almost surely, 2^131225113 is an apocalyptic number.

It is an amenable number.

131225113 is a deficient number, since it is larger than the sum of its proper divisors (1).

131225113 is an equidigital number, since it uses as much as digits as its factorization.

131225113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 180, while the sum is 19.

The square root of 131225113 is about 11455.3530281698. The cubic root of 131225113 is about 508.1660556708.

Adding to 131225113 its reverse (311522131), we get a palindrome (442747244).

The spelling of 131225113 in words is "one hundred thirty-one million, two hundred twenty-five thousand, one hundred thirteen".