31143324145 has 8 divisors (see below), whose sum is σ = 37423399104. Its totient is φ = 24880385904.

The previous prime is 31143324127. The next prime is 31143324151. The reversal of 31143324145 is 54142334113.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31143324145 - 2¹¹ = 31143322097 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4280179 + ... + 4287448.

It is an arithmetic number, because the mean of its divisors is an integer number (4677924888).

Almost surely, 2^31143324145 is an apocalyptic number.

It is an amenable number.

31143324145 is a deficient number, since it is larger than the sum of its proper divisors (6280074959).

31143324145 is an equidigital number, since it uses as much as digits as its factorization.

31143324145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8568359.

The product of its digits is 17280, while the sum is 31.

Adding to 31143324145 its reverse (54142334113), we get a palindrome (85285658258).

The spelling of 31143324145 in words is "thirty-one billion, one hundred forty-three million, three hundred twenty-four thousand, one hundred forty-five".