31101255144 has 96 divisors (see below), whose sum is σ = 85579065000. Its totient is φ = 10202651136.

The previous prime is 31101255071. The next prime is 31101255179. The reversal of 31101255144 is 44155210113.

31101255144 is a `hidden beast` number, since 3 + 1 + 101 + 2 + 551 + 4 + 4 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 28777051044 + 2324204100 = 169638^2 + 48210^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1156054 + ... + 1182650.

Almost surely, 2^31101255144 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31101255144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42789532500).

31101255144 is an abundant number, since it is smaller than the sum of its proper divisors (54477809856).

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

31101255144 is a wasteful number, since it uses less digits than its factorization.

31101255144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26867 (or 26860 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

Adding to 31101255144 its reverse (44155210113), we get a palindrome (75256465257).

The spelling of 31101255144 in words is "thirty-one billion, one hundred one million, two hundred fifty-five thousand, one hundred forty-four".