31143343223 has 32 divisors (see below), whose sum is σ = 34712616960. Its totient is φ = 27833984640.

The previous prime is 31143343183. The next prime is 31143343229. The reversal of 31143343223 is 32234334113.

It is a cyclic number.

It is not a de Polignac number, because 31143343223 - 2⁶ = 31143343159 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 (31143343229) 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 31 ways as a sum of consecutive naturals, for example, 4710386 + ... + 4716992.

It is an arithmetic number, because the mean of its divisors is an integer number (1084769280).

Almost surely, 2^31143343223 is an apocalyptic number.

31143343223 is a deficient number, since it is larger than the sum of its proper divisors (3569273737).

31143343223 is a wasteful number, since it uses less digits than its factorization.

31143343223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6887.

The product of its digits is 15552, while the sum is 29.

Adding to 31143343223 its reverse (32234334113), we get a palindrome (63377677336).

The spelling of 31143343223 in words is "thirty-one billion, one hundred forty-three million, three hundred forty-three thousand, two hundred twenty-three".