31233222442 has 8 divisors (see below), whose sum is σ = 46857622500. Its totient is φ = 15614014944.

The previous prime is 31233222413. The next prime is 31233222457. The reversal of 31233222442 is 24422233213.

It can be written as a sum of positive squares in 2 ways, for example, as 31183674921 + 49547521 = 176589^2 + 7039^2 .

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

It is a super-2 number, since 2×31233222442² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31233222442.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1283067 + ... + 1307182.

Almost surely, 2^31233222442 is an apocalyptic number.

31233222442 is a deficient number, since it is larger than the sum of its proper divisors (15624400058).

31233222442 is a wasteful number, since it uses less digits than its factorization.

31233222442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2596280.

The product of its digits is 13824, while the sum is 28.

Adding to 31233222442 its reverse (24422233213), we get a palindrome (55655455655).

The spelling of 31233222442 in words is "thirty-one billion, two hundred thirty-three million, two hundred twenty-two thousand, four hundred forty-two".