131224273 has 4 divisors (see below), whose sum is σ = 131646528. Its totient is φ = 130802020.

The previous prime is 131224243. The next prime is 131224277. The reversal of 131224273 is 372422131.

It is a happy number.

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 131224273 - 2⁹ = 131223761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131224277) 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, 210661 + ... + 211282.

It is an arithmetic number, because the mean of its divisors is an integer number (32911632).

Almost surely, 2^131224273 is an apocalyptic number.

It is an amenable number.

131224273 is a deficient number, since it is larger than the sum of its proper divisors (422255).

131224273 is an equidigital number, since it uses as much as digits as its factorization.

131224273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422254.

The product of its digits is 2016, while the sum is 25.

The square root of 131224273 is about 11455.3163640294. The cubic root of 131224273 is about 508.1649713753.

The spelling of 131224273 in words is "one hundred thirty-one million, two hundred twenty-four thousand, two hundred seventy-three".