131126245 has 4 divisors (see below), whose sum is σ = 157351500. Its totient is φ = 104900992.

The previous prime is 131126231. The next prime is 131126251. The reversal of 131126245 is 542621131.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 542621131 = 13 ⋅41740087.

It can be written as a sum of positive squares in 2 ways, for example, as 30184036 + 100942209 = 5494^2 + 10047^2 .

It is a cyclic number.

It is not a de Polignac number, because 131126245 - 2⁵ = 131126213 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13112620 + ... + 13112629.

It is an arithmetic number, because the mean of its divisors is an integer number (39337875).

Almost surely, 2^131126245 is an apocalyptic number.

It is an amenable number.

131126245 is a deficient number, since it is larger than the sum of its proper divisors (26225255).

131126245 is an equidigital number, since it uses as much as digits as its factorization.

131126245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26225254.

The product of its digits is 1440, while the sum is 25.

The square root of 131126245 is about 11451.0368526173. The cubic root of 131126245 is about 508.0384022987.

Adding to 131126245 its reverse (542621131), we get a palindrome (673747376).

It can be divided in two parts, 1311 and 26245, that added together give a square (27556 = 166²).

The spelling of 131126245 in words is "one hundred thirty-one million, one hundred twenty-six thousand, two hundred forty-five".