263921241 has 8 divisors (see below), whose sum is σ = 357147424. Its totient is φ = 173321280.

The previous prime is 263921227. The next prime is 263921249. The reversal of 263921241 is 142129362.

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

It is not a de Polignac number, because 263921241 - 2⁹ = 263920729 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 263921199 and 263921208.

It is not an unprimeable number, because it can be changed into a prime (263921249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 656320 + ... + 656721.

It is an arithmetic number, because the mean of its divisors is an integer number (44643428).

Almost surely, 2^263921241 is an apocalyptic number.

It is an amenable number.

263921241 is a deficient number, since it is larger than the sum of its proper divisors (93226183).

263921241 is a wasteful number, since it uses less digits than its factorization.

263921241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1313111.

The product of its digits is 5184, while the sum is 30.

The square root of 263921241 is about 16245.6529877995. The cubic root of 263921241 is about 641.4430661704.

It can be divided in two parts, 2639212 and 41, that added together give a triangular number (2639253 = T₂₂₉₇).

The spelling of 263921241 in words is "two hundred sixty-three million, nine hundred twenty-one thousand, two hundred forty-one".