31040142142 has 8 divisors (see below), whose sum is σ = 46692112896. Its totient is φ = 15476104512.

The previous prime is 31040142139. The next prime is 31040142143. The reversal of 31040142142 is 24124104013.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31040142143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21982398 + ... + 21983809.

It is an arithmetic number, because the mean of its divisors is an integer number (5836514112).

Almost surely, 2^31040142142 is an apocalyptic number.

31040142142 is a deficient number, since it is larger than the sum of its proper divisors (15651970754).

31040142142 is a wasteful number, since it uses less digits than its factorization.

31040142142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43966562.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 31040142142 its reverse (24124104013), we get a palindrome (55164246155).

The spelling of 31040142142 in words is "thirty-one billion, forty million, one hundred forty-two thousand, one hundred forty-two".