403220261 has 8 divisors (see below), whose sum is σ = 424694880. Its totient is φ = 381770928.

The previous prime is 403220243. The next prime is 403220341. The reversal of 403220261 is 162022304.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-403220261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (403226261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32630 + ... + 43256.

It is an arithmetic number, because the mean of its divisors is an integer number (53086860).

Almost surely, 2^403220261 is an apocalyptic number.

It is an amenable number.

403220261 is a deficient number, since it is larger than the sum of its proper divisors (21474619).

403220261 is a wasteful number, since it uses less digits than its factorization.

403220261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12643.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 403220261 is about 20080.3451414561. The cubic root of 403220261 is about 738.7782744228.

Adding to 403220261 its reverse (162022304), we get a palindrome (565242565).

The spelling of 403220261 in words is "four hundred three million, two hundred twenty thousand, two hundred sixty-one".