31440242223 has 48 divisors (see below), whose sum is σ = 49776068160. Its totient is φ = 19006041600.

The previous prime is 31440242209. The next prime is 31440242269. The reversal of 31440242223 is 32224204413.

31440242223 is a `hidden beast` number, since 31 + 4 + 402 + 4 + 2 + 223 = 666.

It is not a de Polignac number, because 31440242223 - 2¹² = 31440238127 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31440242293) 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 47 ways as a sum of consecutive naturals, for example, 2327533 + ... + 2341001.

It is an arithmetic number, because the mean of its divisors is an integer number (1037001420).

Almost surely, 2^31440242223 is an apocalyptic number.

31440242223 is a deficient number, since it is larger than the sum of its proper divisors (18335825937).

31440242223 is a wasteful number, since it uses less digits than its factorization.

31440242223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13840 (or 13837 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 31440242223 its reverse (32224204413), we get a palindrome (63664446636).

The spelling of 31440242223 in words is "thirty-one billion, four hundred forty million, two hundred forty-two thousand, two hundred twenty-three".