263827431 has 12 divisors (see below), whose sum is σ = 435524752. Its totient is φ = 150758496.

The previous prime is 263827429. The next prime is 263827433. The reversal of 263827431 is 134728362.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (263827429) and next prime (263827433).

It is not a de Polignac number, because 263827431 - 2¹ = 263827429 is a prime.

It is a super-2 number, since 2×263827431² = 139209826696119522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (263827433) 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, 2093806 + ... + 2093931.

Almost surely, 2^263827431 is an apocalyptic number.

263827431 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

263827431 is a deficient number, since it is larger than the sum of its proper divisors (171697321).

263827431 is a wasteful number, since it uses less digits than its factorization.

263827431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4187750 (or 4187747 counting only the distinct ones).

The product of its digits is 48384, while the sum is 36.

The square root of 263827431 is about 16242.7654972914. The cubic root of 263827431 is about 641.3670575036.

The spelling of 263827431 in words is "two hundred sixty-three million, eight hundred twenty-seven thousand, four hundred thirty-one".