31012140142 has 16 divisors (see below), whose sum is σ = 47838252672. Its totient is φ = 15068999680.

The previous prime is 31012140097. The next prime is 31012140151. The reversal of 31012140142 is 24104121013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 714718 + ... + 756865.

It is an arithmetic number, because the mean of its divisors is an integer number (2989890792).

Almost surely, 2^31012140142 is an apocalyptic number.

31012140142 is a deficient number, since it is larger than the sum of its proper divisors (16826112530).

31012140142 is a wasteful number, since it uses less digits than its factorization.

31012140142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1471883.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 31012140142 its reverse (24104121013), we get a palindrome (55116261155).

The spelling of 31012140142 in words is "thirty-one billion, twelve million, one hundred forty thousand, one hundred forty-two".