31143343224 has 32 divisors (see below), whose sum is σ = 88980981120. Its totient is φ = 8898098016.

The previous prime is 31143343183. The next prime is 31143343229. The reversal of 31143343224 is 42234334113.

It is a happy number.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 31143343191 and 31143343200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31143343229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92688354 + ... + 92688689.

It is an arithmetic number, because the mean of its divisors is an integer number (2780655660).

Almost surely, 2^31143343224 is an apocalyptic number.

It is an amenable number.

31143343224 is an abundant number, since it is smaller than the sum of its proper divisors (57837637896).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31143343224 is a wasteful number, since it uses less digits than its factorization.

31143343224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185377059 (or 185377055 counting only the distinct ones).

The product of its digits is 20736, while the sum is 30.

Adding to 31143343224 its reverse (42234334113), we get a palindrome (73377677337).

The spelling of 31143343224 in words is "thirty-one billion, one hundred forty-three million, three hundred forty-three thousand, two hundred twenty-four".