31234424143 has 32 divisors (see below), whose sum is σ = 36003606912. Its totient is φ = 26869708800.

The previous prime is 31234424101. The next prime is 31234424149. The reversal of 31234424143 is 34142443213.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31234424143 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31234424149) 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 in 31 ways as a sum of consecutive naturals, for example, 13692163 + ... + 13694443.

It is an arithmetic number, because the mean of its divisors is an integer number (1125112716).

Almost surely, 2^31234424143 is an apocalyptic number.

31234424143 is a deficient number, since it is larger than the sum of its proper divisors (4769182769).

31234424143 is a wasteful number, since it uses less digits than its factorization.

31234424143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3475.

The product of its digits is 27648, while the sum is 31.

Adding to 31234424143 its reverse (34142443213), we get a palindrome (65376867356).

The spelling of 31234424143 in words is "thirty-one billion, two hundred thirty-four million, four hundred twenty-four thousand, one hundred forty-three".