31444420242 has 16 divisors (see below), whose sum is σ = 62955683712. Its totient is φ = 10470332880.

The previous prime is 31444420219. The next prime is 31444420303. The reversal of 31444420242 is 24202444413.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2779018 + ... + 2790309.

It is an arithmetic number, because the mean of its divisors is an integer number (3934730232).

Almost surely, 2^31444420242 is an apocalyptic number.

31444420242 is an abundant number, since it is smaller than the sum of its proper divisors (31511263470).

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

31444420242 is a wasteful number, since it uses less digits than its factorization.

31444420242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5570273.

The product of its (nonzero) digits is 24576, while the sum is 30.

Adding to 31444420242 its reverse (24202444413), we get a palindrome (55646864655).

The spelling of 31444420242 in words is "thirty-one billion, four hundred forty-four million, four hundred twenty thousand, two hundred forty-two".