131245449 has 4 divisors (see below), whose sum is σ = 174993936. Its totient is φ = 87496964.

The previous prime is 131245447. The next prime is 131245489. The reversal of 131245449 is 944542131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 131245449 - 2¹ = 131245447 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131245447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21874239 + ... + 21874244.

It is an arithmetic number, because the mean of its divisors is an integer number (43748484).

Almost surely, 2^131245449 is an apocalyptic number.

It is an amenable number.

131245449 is a deficient number, since it is larger than the sum of its proper divisors (43748487).

131245449 is an equidigital number, since it uses as much as digits as its factorization.

131245449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43748486.

The product of its digits is 17280, while the sum is 33.

The square root of 131245449 is about 11456.2406137441. The cubic root of 131245449 is about 508.1923045366.

The spelling of 131245449 in words is "one hundred thirty-one million, two hundred forty-five thousand, four hundred forty-nine".