31112201144 has 16 divisors (see below), whose sum is σ = 58380652800. Its totient is φ = 15544027072.

The previous prime is 31112201119. The next prime is 31112201147. The reversal of 31112201144 is 44110221113.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31112201147) 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, 1498232 + ... + 1518855.

It is an arithmetic number, because the mean of its divisors is an integer number (3648790800).

Almost surely, 2^31112201144 is an apocalyptic number.

It is an amenable number.

31112201144 is a deficient number, since it is larger than the sum of its proper divisors (27268451656).

31112201144 is a wasteful number, since it uses less digits than its factorization.

31112201144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3018382 (or 3018378 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 31112201144 its reverse (44110221113), we get a palindrome (75222422257).

The spelling of 31112201144 in words is "thirty-one billion, one hundred twelve million, two hundred one thousand, one hundred forty-four".