31422142143 has 18 divisors (see below), whose sum is σ = 52797749784. Its totient is φ = 17955509544.

The previous prime is 31422142127. The next prime is 31422142163. The reversal of 31422142143 is 34124122413.

31422142143 is a `hidden beast` number, since 3 + 14 + 221 + 421 + 4 + 3 = 666.

It is not a de Polignac number, because 31422142143 - 2⁴ = 31422142127 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31422142163) 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 17 ways as a sum of consecutive naturals, for example, 35625571 + ... + 35626452.

Almost surely, 2^31422142143 is an apocalyptic number.

31422142143 is a deficient number, since it is larger than the sum of its proper divisors (21375607641).

31422142143 is a wasteful number, since it uses less digits than its factorization.

31422142143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71252043 (or 71252033 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

Adding to 31422142143 its reverse (34124122413), we get a palindrome (65546264556).

The spelling of 31422142143 in words is "thirty-one billion, four hundred twenty-two million, one hundred forty-two thousand, one hundred forty-three".