276401231 has 2 divisors, whose sum is σ = 276401232. Its totient is φ = 276401230.

The previous prime is 276401207. The next prime is 276401243. The reversal of 276401231 is 132104672.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 276401231 - 2¹⁰ = 276400207 is a prime.

It is a super-2 number, since 2×276401231² = 152795280996630722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 276401231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (276401261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 138200615 + 138200616.

It is an arithmetic number, because the mean of its divisors is an integer number (138200616).

Almost surely, 2^276401231 is an apocalyptic number.

276401231 is a deficient number, since it is larger than the sum of its proper divisors (1).

276401231 is an equidigital number, since it uses as much as digits as its factorization.

276401231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 276401231 is about 16625.3189743836. The cubic root of 276401231 is about 651.3983552196.

The spelling of 276401231 in words is "two hundred seventy-six million, four hundred one thousand, two hundred thirty-one".