131224773 has 16 divisors (see below), whose sum is σ = 185873600. Its totient is φ = 82114560.

The previous prime is 131224763. The next prime is 131224783. The reversal of 131224773 is 377422131.

It is an interprime number because it is at equal distance from previous prime (131224763) and next prime (131224783).

It is not a de Polignac number, because 131224773 - 2¹³ = 131216581 is a prime.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 131224773.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131224733) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4348 + ... + 16773.

It is an arithmetic number, because the mean of its divisors is an integer number (11617100).

Almost surely, 2^131224773 is an apocalyptic number.

It is an amenable number.

131224773 is a deficient number, since it is larger than the sum of its proper divisors (54648827).

131224773 is a wasteful number, since it uses less digits than its factorization.

131224773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21252.

The product of its digits is 7056, while the sum is 30.

The square root of 131224773 is about 11455.3381879367. The cubic root of 131224773 is about 508.1656167899.

The spelling of 131224773 in words is "one hundred thirty-one million, two hundred twenty-four thousand, seven hundred seventy-three".