31422421242 has 24 divisors (see below), whose sum is σ = 68087358144. Its totient is φ = 10473302664.

The previous prime is 31422421157. The next prime is 31422421307. The reversal of 31422421242 is 24212422413.

It is a happy number.

31422421242 is a `hidden beast` number, since 314 + 224 + 2 + 124 + 2 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 187023 + ... + 312765.

It is an arithmetic number, because the mean of its divisors is an integer number (2836973256).

Almost surely, 2^31422421242 is an apocalyptic number.

31422421242 is an abundant number, since it is smaller than the sum of its proper divisors (36664936902).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31422421242 is a wasteful number, since it uses less digits than its factorization.

31422421242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139634 (or 139631 counting only the distinct ones).

The product of its digits is 6144, while the sum is 27.

Adding to 31422421242 its reverse (24212422413), we get a palindrome (55634843655).

It can be divided in two parts, 314 and 22421242, that added together give a triangular number (22421556 = T₆₆₉₆).

The spelling of 31422421242 in words is "thirty-one billion, four hundred twenty-two million, four hundred twenty-one thousand, two hundred forty-two".