731223878 has 16 divisors (see below), whose sum is σ = 1367483904. Its totient is φ = 284892360.

The previous prime is 731223869. The next prime is 731223887. The reversal of 731223878 is 878322137.

It is an interprime number because it is at equal distance from previous prime (731223869) and next prime (731223887).

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, 2373950 + ... + 2374257.

It is an arithmetic number, because the mean of its divisors is an integer number (85467744).

Almost surely, 2^731223878 is an apocalyptic number.

731223878 is a deficient number, since it is larger than the sum of its proper divisors (636260026).

731223878 is a wasteful number, since it uses less digits than its factorization.

731223878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4748227.

The product of its digits is 112896, while the sum is 41.

The square root of 731223878 is about 27041.1515657155. The cubic root of 731223878 is about 900.9142470975.

The spelling of 731223878 in words is "seven hundred thirty-one million, two hundred twenty-three thousand, eight hundred seventy-eight".