10203091 has 4 divisors (see below), whose sum is σ = 10221352. Its totient is φ = 10184832.

The previous prime is 10203071. The next prime is 10203097. The reversal of 10203091 is 19030201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10203091 - 2⁷ = 10202963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10203097) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8265 + ... + 9418.

It is an arithmetic number, because the mean of its divisors is an integer number (2555338).

Almost surely, 2^10203091 is an apocalyptic number.

10203091 is a deficient number, since it is larger than the sum of its proper divisors (18261).

10203091 is an equidigital number, since it uses as much as digits as its factorization.

10203091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18260.

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 10203091 is about 3194.2277626995. The cubic root of 10203091 is about 216.8921930466.

Adding to 10203091 its reverse (19030201), we get a palindrome (29233292).

The spelling of 10203091 in words is "ten million, two hundred three thousand, ninety-one".