261433203 has 16 divisors (see below), whose sum is σ = 364124160. Its totient is φ = 166531904.

The previous prime is 261433187. The next prime is 261433219. The reversal of 261433203 is 302334162.

It is an interprime number because it is at equal distance from previous prime (261433187) and next prime (261433219).

It is a cyclic number.

It is not a de Polignac number, because 261433203 - 2⁴ = 261433187 is a prime.

It is not an unprimeable number, because it can be changed into a prime (261433243) 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, 97975 + ... + 100607.

It is an arithmetic number, because the mean of its divisors is an integer number (22757760).

Almost surely, 2^261433203 is an apocalyptic number.

261433203 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

261433203 is a deficient number, since it is larger than the sum of its proper divisors (102690957).

261433203 is a wasteful number, since it uses less digits than its factorization.

261433203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4098.

The product of its (nonzero) digits is 2592, while the sum is 24.

The square root of 261433203 is about 16168.8961589838. The cubic root of 261433203 is about 639.4210283157.

Adding to 261433203 its reverse (302334162), we get a palindrome (563767365).

The spelling of 261433203 in words is "two hundred sixty-one million, four hundred thirty-three thousand, two hundred three".