31324143143 has 8 divisors (see below), whose sum is σ = 32437482480. Its totient is φ = 30213016960.

The previous prime is 31324143121. The next prime is 31324143199. The reversal of 31324143143 is 34134142313.

It is a happy number.

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 31324143143 - 2¹⁸ = 31323880999 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31324143043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 524453 + ... + 581118.

It is an arithmetic number, because the mean of its divisors is an integer number (4054685310).

Almost surely, 2^31324143143 is an apocalyptic number.

31324143143 is a deficient number, since it is larger than the sum of its proper divisors (1113339337).

31324143143 is a wasteful number, since it uses less digits than its factorization.

31324143143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1106577.

The product of its digits is 10368, while the sum is 29.

Adding to 31324143143 its reverse (34134142313), we get a palindrome (65458285456).

The spelling of 31324143143 in words is "thirty-one billion, three hundred twenty-four million, one hundred forty-three thousand, one hundred forty-three".