31143313123 has 48 divisors (see below), whose sum is σ = 35572245408. Its totient is φ = 27081331200.

The previous prime is 31143313073. The next prime is 31143313129. The reversal of 31143313123 is 32131334113.

It is not a de Polignac number, because 31143313123 - 2³³ = 22553378531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31143313129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 180019065 + ... + 180019237.

It is an arithmetic number, because the mean of its divisors is an integer number (741088446).

Almost surely, 2^31143313123 is an apocalyptic number.

31143313123 is a deficient number, since it is larger than the sum of its proper divisors (4428932285).

31143313123 is a wasteful number, since it uses less digits than its factorization.

31143313123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436 (or 365 counting only the distinct ones).

The product of its digits is 1944, while the sum is 25.

Adding to 31143313123 its reverse (32131334113), we get a palindrome (63274647236).

The spelling of 31143313123 in words is "thirty-one billion, one hundred forty-three million, three hundred thirteen thousand, one hundred twenty-three".