31155124143 has 96 divisors (see below), whose sum is σ = 50507297280. Its totient is φ = 16926174720.

The previous prime is 31155124081. The next prime is 31155124177. The reversal of 31155124143 is 34142155113.

It is not a de Polignac number, because 31155124143 - 2¹³ = 31155115951 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31155124143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31155124843) by changing a digit.

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 95 ways as a sum of consecutive naturals, for example, 32217846 + ... + 32218812.

It is an arithmetic number, because the mean of its divisors is an integer number (526117680).

Almost surely, 2^31155124143 is an apocalyptic number.

31155124143 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

31155124143 is a deficient number, since it is larger than the sum of its proper divisors (19352173137).

31155124143 is a wasteful number, since it uses less digits than its factorization.

31155124143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1169 (or 1156 counting only the distinct ones).

The product of its digits is 7200, while the sum is 30.

Adding to 31155124143 its reverse (34142155113), we get a palindrome (65297279256).

The spelling of 31155124143 in words is "thirty-one billion, one hundred fifty-five million, one hundred twenty-four thousand, one hundred forty-three".