31878741268 has 48 divisors (see below), whose sum is σ = 62339973696. Its totient is φ = 14138530560.

The previous prime is 31878741239. The next prime is 31878741317. The reversal of 31878741268 is 86214787813.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1908280 + ... + 1924912.

It is an arithmetic number, because the mean of its divisors is an integer number (1298749452).

Almost surely, 2^31878741268 is an apocalyptic number.

It is an amenable number.

31878741268 is a deficient number, since it is larger than the sum of its proper divisors (30461232428).

31878741268 is a wasteful number, since it uses less digits than its factorization.

31878741268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17704 (or 17702 counting only the distinct ones).

The product of its digits is 3612672, while the sum is 55.

It can be divided in two parts, 31878 and 741268, that added together give a triangular number (773146 = T₁₂₄₃).

The spelling of 31878741268 in words is "thirty-one billion, eight hundred seventy-eight million, seven hundred forty-one thousand, two hundred sixty-eight".