10309091 has 8 divisors (see below), whose sum is σ = 11175024. Its totient is φ = 9453600.

The previous prime is 10309073. The next prime is 10309097. The reversal of 10309091 is 19090301.

10309091 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 10309091 - 2¹⁸ = 10046947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10309097) 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, 485 + ... + 4566.

It is an arithmetic number, because the mean of its divisors is an integer number (1396878).

Almost surely, 2^10309091 is an apocalyptic number.

10309091 is a deficient number, since it is larger than the sum of its proper divisors (865933).

10309091 is a wasteful number, since it uses less digits than its factorization.

10309091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5221.

The product of its (nonzero) digits is 243, while the sum is 23.

The square root of 10309091 is about 3210.7773202139. Note that the first 3 decimals coincide. The cubic root of 10309091 is about 217.6407051856.

Adding to 10309091 its reverse (19090301), we get a palindrome (29399392).

The spelling of 10309091 in words is "ten million, three hundred nine thousand, ninety-one".