31144021232286 has 128 divisors (see below), whose sum is σ = 67161783661056. Its totient is φ = 9593269862400.

The previous prime is 31144021232087. The next prime is 31144021232287. The reversal of 31144021232286 is 68223212044113.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31144021232287) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 907945336 + ... + 907979636.

It is an arithmetic number, because the mean of its divisors is an integer number (524701434852).

Almost surely, 2^{31144021232286} is an apocalyptic number.

31144021232286 is an abundant number, since it is smaller than the sum of its proper divisors (36017762428770).

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

31144021232286 is a wasteful number, since it uses less digits than its factorization.

31144021232286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35146.

The product of its (nonzero) digits is 110592, while the sum is 39.

Adding to 31144021232286 its reverse (68223212044113), we get a palindrome (99367233276399).

The spelling of 31144021232286 in words is "thirty-one trillion, one hundred forty-four billion, twenty-one million, two hundred thirty-two thousand, two hundred eighty-six".