31424422042 has 8 divisors (see below), whose sum is σ = 50762527956. Its totient is φ = 14503579392.

The previous prime is 31424422033. The next prime is 31424422049. The reversal of 31424422042 is 24022442413.

It can be written as a sum of positive squares in 2 ways, for example, as 23641830081 + 7782591961 = 153759^2 + 88219^2 .

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 31424422042.

It is not an unprimeable number, because it can be changed into a prime (31424422049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 604315783 + ... + 604315834.

Almost surely, 2^31424422042 is an apocalyptic number.

31424422042 is a deficient number, since it is larger than the sum of its proper divisors (19338105914).

31424422042 is a wasteful number, since it uses less digits than its factorization.

31424422042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1208631632.

The product of its (nonzero) digits is 12288, while the sum is 28.

Adding to 31424422042 its reverse (24022442413), we get a palindrome (55446864455).

The spelling of 31424422042 in words is "thirty-one billion, four hundred twenty-four million, four hundred twenty-two thousand, forty-two".