31142332143 has 64 divisors (see below), whose sum is σ = 52471802880. Its totient is φ = 18110024064.

The previous prime is 31142332093. The next prime is 31142332159. The reversal of 31142332143 is 34123324113.

It is a happy number.

31142332143 is a `hidden beast` number, since 311 + 4 + 2 + 332 + 14 + 3 = 666.

It is not a de Polignac number, because 31142332143 - 2⁸ = 31142331887 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31142332163) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 646821 + ... + 693297.

It is an arithmetic number, because the mean of its divisors is an integer number (819871920).

Almost surely, 2^31142332143 is an apocalyptic number.

31142332143 is a deficient number, since it is larger than the sum of its proper divisors (21329470737).

31142332143 is a wasteful number, since it uses less digits than its factorization.

31142332143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46605 (or 46599 counting only the distinct ones).

The product of its digits is 5184, while the sum is 27.

Adding to 31142332143 its reverse (34123324113), we get a palindrome (65265656256).

The spelling of 31142332143 in words is "thirty-one billion, one hundred forty-two million, three hundred thirty-two thousand, one hundred forty-three".