31112223143 has 2 divisors, whose sum is σ = 31112223144. Its totient is φ = 31112223142.

The previous prime is 31112223083. The next prime is 31112223173. The reversal of 31112223143 is 34132221113.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31112223143 - 2⁸ = 31112222887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31112223173) 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 as a sum of consecutive naturals, namely, 15556111571 + 15556111572.

It is an arithmetic number, because the mean of its divisors is an integer number (15556111572).

Almost surely, 2^31112223143 is an apocalyptic number.

31112223143 is a deficient number, since it is larger than the sum of its proper divisors (1).

31112223143 is an equidigital number, since it uses as much as digits as its factorization.

31112223143 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 864, while the sum is 23.

Adding to 31112223143 its reverse (34132221113), we get a palindrome (65244444256).

The spelling of 31112223143 in words is "thirty-one billion, one hundred twelve million, two hundred twenty-three thousand, one hundred forty-three".