31378266842 has 48 divisors (see below), whose sum is σ = 52482867192. Its totient is φ = 14053478400.

The previous prime is 31378266827. The next prime is 31378266869. The reversal of 31378266842 is 24866287313.

It can be written as a sum of positive squares in 12 ways, for example, as 19695034921 + 11683231921 = 140339^2 + 108089^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5011778 + ... + 5018034.

Almost surely, 2^31378266842 is an apocalyptic number.

31378266842 is a deficient number, since it is larger than the sum of its proper divisors (21104600350).

31378266842 is a wasteful number, since it uses less digits than its factorization.

31378266842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6723 (or 6710 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 50.

The spelling of 31378266842 in words is "thirty-one billion, three hundred seventy-eight million, two hundred sixty-six thousand, eight hundred forty-two".