10309923 has 20 divisors (see below), whose sum is σ = 16587648. Its totient is φ = 6343920.

The previous prime is 10309921. The next prime is 10309927. The reversal of 10309923 is 32990301.

It is not a de Polignac number, because 10309923 - 2¹ = 10309921 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (10309921) 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 19 ways as a sum of consecutive naturals, for example, 3843 + ... + 5948.

Almost surely, 2^10309923 is an apocalyptic number.

10309923 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

10309923 is a deficient number, since it is larger than the sum of its proper divisors (6277725).

10309923 is an equidigital number, since it uses as much as digits as its factorization.

10309923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9816 (or 9807 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 27.

The square root of 10309923 is about 3210.9068812409. The cubic root of 10309923 is about 217.6465599596.

The spelling of 10309923 in words is "ten million, three hundred nine thousand, nine hundred twenty-three".