31146142724 has 24 divisors (see below), whose sum is σ = 54672334080. Its totient is φ = 15525550656.

The previous prime is 31146142721. The next prime is 31146142733. The reversal of 31146142724 is 42724164113.

It is not an unprimeable number, because it can be changed into a prime (31146142721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1785557 + ... + 1802915.

It is an arithmetic number, because the mean of its divisors is an integer number (2278013920).

Almost surely, 2^31146142724 is an apocalyptic number.

It is an amenable number.

31146142724 is a deficient number, since it is larger than the sum of its proper divisors (23526191356).

31146142724 is a wasteful number, since it uses less digits than its factorization.

31146142724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18707 (or 18705 counting only the distinct ones).

The product of its digits is 32256, while the sum is 35.

The spelling of 31146142724 in words is "thirty-one billion, one hundred forty-six million, one hundred forty-two thousand, seven hundred twenty-four".