131040225 has 36 divisors (see below), whose sum is σ = 236944656. Its totient is φ = 69222240.

The previous prime is 131040211. The next prime is 131040229. The reversal of 131040225 is 522040131.

It is not a de Polignac number, because 131040225 - 2⁴ = 131040209 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 131040198 and 131040207.

It is not an unprimeable number, because it can be changed into a prime (131040229) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 21354 + ... + 26796.

It is an arithmetic number, because the mean of its divisors is an integer number (6581796).

Almost surely, 2^131040225 is an apocalyptic number.

131040225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

131040225 is a deficient number, since it is larger than the sum of its proper divisors (105904431).

131040225 is a wasteful number, since it uses less digits than its factorization.

131040225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5566 (or 5558 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 131040225 is about 11447.2802446695. The cubic root of 131040225 is about 507.9272854051.

Adding to 131040225 its reverse (522040131), we get a palindrome (653080356).

The spelling of 131040225 in words is "one hundred thirty-one million, forty thousand, two hundred twenty-five".