263031231 has 8 divisors (see below), whose sum is σ = 369166720. Its totient is φ = 166124952.

The previous prime is 263031221. The next prime is 263031239. The reversal of 263031231 is 132130362.

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

It is not a de Polignac number, because 263031231 - 2⁵ = 263031199 is a prime.

It is a super-2 number, since 2×263031231² = 138370856962750722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 263031198 and 263031207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (263031239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2307235 + ... + 2307348.

It is an arithmetic number, because the mean of its divisors is an integer number (46145840).

Almost surely, 2^263031231 is an apocalyptic number.

263031231 is a deficient number, since it is larger than the sum of its proper divisors (106135489).

263031231 is a wasteful number, since it uses less digits than its factorization.

263031231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4614605.

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 263031231 is about 16218.2376046228. The cubic root of 263031231 is about 640.7212173895.

Adding to 263031231 its reverse (132130362), we get a palindrome (395161593).

The spelling of 263031231 in words is "two hundred sixty-three million, thirty-one thousand, two hundred thirty-one".