31544230242 has 32 divisors (see below), whose sum is σ = 72157593600. Its totient is φ = 9005575248.

The previous prime is 31544230219. The next prime is 31544230247. The reversal of 31544230242 is 24203244513.

It is not an unprimeable number, because it can be changed into a prime (31544230247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 239892 + ... + 347327.

It is an arithmetic number, because the mean of its divisors is an integer number (2254924800).

Almost surely, 2^31544230242 is an apocalyptic number.

31544230242 is an abundant number, since it is smaller than the sum of its proper divisors (40613363358).

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

31544230242 is a wasteful number, since it uses less digits than its factorization.

31544230242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 588510.

The product of its (nonzero) digits is 23040, while the sum is 30.

Adding to 31544230242 its reverse (24203244513), we get a palindrome (55747474755).

The spelling of 31544230242 in words is "thirty-one billion, five hundred forty-four million, two hundred thirty thousand, two hundred forty-two".