276985231 has 8 divisors (see below), whose sum is σ = 286183040. Its totient is φ = 267912792.

The previous prime is 276985213. The next prime is 276985237. The reversal of 276985231 is 132589672.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 276985231 - 2¹¹ = 276983183 is a prime.

It is a super-2 number, since 2×276985231² = 153441636384246722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (276985237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26841 + ... + 35698.

It is an arithmetic number, because the mean of its divisors is an integer number (35772880).

Almost surely, 2^276985231 is an apocalyptic number.

276985231 is a deficient number, since it is larger than the sum of its proper divisors (9197809).

276985231 is a wasteful number, since it uses less digits than its factorization.

276985231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62685.

The product of its digits is 181440, while the sum is 43.

The square root of 276985231 is about 16642.8732795753. The cubic root of 276985231 is about 651.8568059393.

The spelling of 276985231 in words is "two hundred seventy-six million, nine hundred eighty-five thousand, two hundred thirty-one".