Search a number
10023403 = 13771031
BaseRepresentation
bin100110001111…
…000111101011
3200212020112011
4212033013223
510031222103
6554500351
7151124515
oct46170753
920766464
1010023403
115726805
1234346b7
1320cc410
14148cbb5
15d2ed6d
hex98f1eb

10023403 has 4 divisors (see below), whose sum is σ = 10794448. Its totient is φ = 9252360.

The previous prime is 10023397. The next prime is 10023407. The reversal of 10023403 is 30432001.

10023403 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30432001 = 128923609.

It is not a de Polignac number, because 10023403 - 25 = 10023371 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13), and also a Moran number because the ratio is a prime number: 771031 = 10023403 / (1 + 0 + 0 + 2 + 3 + 4 + 0 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10023407) 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, 385503 + ... + 385528.

It is an arithmetic number, because the mean of its divisors is an integer number (2698612).

Almost surely, 210023403 is an apocalyptic number.

10023403 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

10023403 is a deficient number, since it is larger than the sum of its proper divisors (771045).

10023403 is an equidigital number, since it uses as much as digits as its factorization.

10023403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 771044.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 10023403 is about 3165.9758369261. The cubic root of 10023403 is about 215.6114055141.

Adding to 10023403 its reverse (30432001), we get a palindrome (40455404).

The spelling of 10023403 in words is "ten million, twenty-three thousand, four hundred three".

Divisors: 1 13 771031 10023403