31224131343 has 10 divisors (see below), whose sum is σ = 46643455584. Its totient is φ = 20816087508.

The previous prime is 31224131311. The next prime is 31224131363. The reversal of 31224131343 is 34313142213.

It is a happy number.

31224131343 is a `hidden beast` number, since 312 + 2 + 4 + 1 + 3 + 1 + 343 = 666.

It is not a de Polignac number, because 31224131343 - 2⁵ = 31224131311 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31224131363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 192741471 + ... + 192741632.

Almost surely, 2^31224131343 is an apocalyptic number.

31224131343 is a deficient number, since it is larger than the sum of its proper divisors (15419324241).

31224131343 is an equidigital number, since it uses as much as digits as its factorization.

31224131343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385483115 (or 385483106 counting only the distinct ones).

The product of its digits is 5184, while the sum is 27.

Adding to 31224131343 its reverse (34313142213), we get a palindrome (65537273556).

The spelling of 31224131343 in words is "thirty-one billion, two hundred twenty-four million, one hundred thirty-one thousand, three hundred forty-three".