31032442143 has 32 divisors (see below), whose sum is σ = 47179334400. Its totient is φ = 20148676128.

The previous prime is 31032442123. The next prime is 31032442157. The reversal of 31032442143 is 34124423013.

31032442143 is a `hidden beast` number, since 310 + 324 + 4 + 21 + 4 + 3 = 666.

It is not a de Polignac number, because 31032442143 - 2²¹ = 31030344991 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 (31032442123) 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, 364353 + ... + 441381.

It is an arithmetic number, because the mean of its divisors is an integer number (1474354200).

Almost surely, 2^31032442143 is an apocalyptic number.

31032442143 is a deficient number, since it is larger than the sum of its proper divisors (16146892257).

31032442143 is a wasteful number, since it uses less digits than its factorization.

31032442143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77428 (or 77422 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 31032442143 its reverse (34124423013), we get a palindrome (65156865156).

The spelling of 31032442143 in words is "thirty-one billion, thirty-two million, four hundred forty-two thousand, one hundred forty-three".