31362140242 has 8 divisors (see below), whose sum is σ = 47238411132. Its totient is φ = 15616003200.

The previous prime is 31362140197. The next prime is 31362140269. The reversal of 31362140242 is 24204126313.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 31243744081 + 118396161 = 176759^2 + 10881^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 31362140242.

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, 32532859 + ... + 32533822.

Almost surely, 2^31362140242 is an apocalyptic number.

31362140242 is a deficient number, since it is larger than the sum of its proper divisors (15876270890).

31362140242 is a wasteful number, since it uses less digits than its factorization.

31362140242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65066924.

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 31362140242 its reverse (24204126313), we get a palindrome (55566266555).

The spelling of 31362140242 in words is "thirty-one billion, three hundred sixty-two million, one hundred forty thousand, two hundred forty-two".