31142184988 has 12 divisors (see below), whose sum is σ = 55527103800. Its totient is φ = 15277298192.

The previous prime is 31142184979. The next prime is 31142185001. The reversal of 31142184988 is 88948124113.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73448338 + ... + 73448761.

It is an arithmetic number, because the mean of its divisors is an integer number (4627258650).

Almost surely, 2^31142184988 is an apocalyptic number.

It is an amenable number.

31142184988 is a deficient number, since it is larger than the sum of its proper divisors (24384918812).

31142184988 is a wasteful number, since it uses less digits than its factorization.

31142184988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146897156 (or 146897154 counting only the distinct ones).

The product of its digits is 442368, while the sum is 49.

The spelling of 31142184988 in words is "thirty-one billion, one hundred forty-two million, one hundred eighty-four thousand, nine hundred eighty-eight".