31112223242 has 8 divisors (see below), whose sum is σ = 46861980132. Its totient is φ = 15491563200.

The previous prime is 31112223223. The next prime is 31112223253. The reversal of 31112223242 is 24232221113.

It can be written as a sum of positive squares in 2 ways, for example, as 23485869001 + 7626354241 = 153251^2 + 87329^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32273609 + ... + 32274572.

Almost surely, 2^31112223242 is an apocalyptic number.

31112223242 is a deficient number, since it is larger than the sum of its proper divisors (15749756890).

31112223242 is a wasteful number, since it uses less digits than its factorization.

31112223242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64548424.

The product of its digits is 1152, while the sum is 23.

Adding to 31112223242 its reverse (24232221113), we get a palindrome (55344444355).

The spelling of 31112223242 in words is "thirty-one billion, one hundred twelve million, two hundred twenty-three thousand, two hundred forty-two".