263353431 has 16 divisors (see below), whose sum is σ = 385822080. Its totient is φ = 158457120.

The previous prime is 263353399. The next prime is 263353451. The reversal of 263353431 is 134353362.

It is not a de Polignac number, because 263353431 - 2⁵ = 263353399 is a prime.

It is a super-2 number, since 2×263353431² = 138710059238943522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (263353451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24120 + ... + 33293.

It is an arithmetic number, because the mean of its divisors is an integer number (24113880).

Almost surely, 2^263353431 is an apocalyptic number.

263353431 is a deficient number, since it is larger than the sum of its proper divisors (122468649).

263353431 is a wasteful number, since it uses less digits than its factorization.

263353431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57566.

The product of its digits is 19440, while the sum is 30.

The square root of 263353431 is about 16228.1678263444. The cubic root of 263353431 is about 640.9827277049.

The spelling of 263353431 in words is "two hundred sixty-three million, three hundred fifty-three thousand, four hundred thirty-one".