278049231 has 12 divisors (see below), whose sum is σ = 419089008. Its totient is φ = 177306624.

The previous prime is 278049217. The next prime is 278049251. The reversal of 278049231 is 132940872.

It is not a de Polignac number, because 278049231 - 2¹¹ = 278047183 is a prime.

It is a super-2 number, since 2×278049231² = 154622749719382722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (278049251) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 671410 + ... + 671823.

It is an arithmetic number, because the mean of its divisors is an integer number (34924084).

Almost surely, 2^278049231 is an apocalyptic number.

278049231 is a deficient number, since it is larger than the sum of its proper divisors (141039777).

278049231 is a wasteful number, since it uses less digits than its factorization.

278049231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1343262 (or 1343259 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 278049231 is about 16674.8082747599. The cubic root of 278049231 is about 652.6904116857.

The spelling of 278049231 in words is "two hundred seventy-eight million, forty-nine thousand, two hundred thirty-one".