31224144031 has 8 divisors (see below), whose sum is σ = 31598097840. Its totient is φ = 30850704192.

The previous prime is 31224143989. The next prime is 31224144037. The reversal of 31224144031 is 13044142213.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31224144031 - 2⁹ = 31224143519 is a prime.

It is a super-2 number, since 2×31224144031² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31224143987 and 31224144005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31224144037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5565 + ... + 249958.

It is an arithmetic number, because the mean of its divisors is an integer number (3949762230).

Almost surely, 2^31224144031 is an apocalyptic number.

31224144031 is a deficient number, since it is larger than the sum of its proper divisors (373953809).

31224144031 is a wasteful number, since it uses less digits than its factorization.

31224144031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256985.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 31224144031 its reverse (13044142213), we get a palindrome (44268286244).

The spelling of 31224144031 in words is "thirty-one billion, two hundred twenty-four million, one hundred forty-four thousand, thirty-one".