263161323 has 12 divisors (see below), whose sum is σ = 381340440. Its totient is φ = 174878496.

The previous prime is 263161307. The next prime is 263161361. The reversal of 263161323 is 323161362.

It is a happy number.

263161323 is a `hidden beast` number, since 2 + 631 + 6 + 1 + 3 + 23 = 666.

It is not a de Polignac number, because 263161323 - 2⁴ = 263161307 is a prime.

It is a super-2 number, since 2×263161323² = 138507763846220658, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (263121323) 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 11 ways as a sum of consecutive naturals, for example, 43893 + ... + 49526.

It is an arithmetic number, because the mean of its divisors is an integer number (31778370).

Almost surely, 2^263161323 is an apocalyptic number.

263161323 is a deficient number, since it is larger than the sum of its proper divisors (118179117).

263161323 is a wasteful number, since it uses less digits than its factorization.

263161323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93738 (or 93735 counting only the distinct ones).

The product of its digits is 3888, while the sum is 27.

The square root of 263161323 is about 16222.2477788992. The cubic root of 263161323 is about 640.8268309147.

The spelling of 263161323 in words is "two hundred sixty-three million, one hundred sixty-one thousand, three hundred twenty-three".