262921231 has 2 divisors, whose sum is σ = 262921232. Its totient is φ = 262921230.

The previous prime is 262921213. The next prime is 262921249. The reversal of 262921231 is 132129262.

Together with previous prime (262921213) it forms an Ormiston pair, because they use the same digits, order apart.

It is a balanced prime because it is at equal distance from previous prime (262921213) and next prime (262921249).

It is a cyclic number.

It is not a de Polignac number, because 262921231 - 2⁷ = 262921103 is a prime.

It is a super-2 number, since 2×262921231² = 138255147421110722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 262921231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (262921331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131460615 + 131460616.

It is an arithmetic number, because the mean of its divisors is an integer number (131460616).

Almost surely, 2^262921231 is an apocalyptic number.

262921231 is a deficient number, since it is larger than the sum of its proper divisors (1).

262921231 is an equidigital number, since it uses as much as digits as its factorization.

262921231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592, while the sum is 28.

The square root of 262921231 is about 16214.8460060526. The cubic root of 262921231 is about 640.6318881226.

The spelling of 262921231 in words is "two hundred sixty-two million, nine hundred twenty-one thousand, two hundred thirty-one".