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1232431223 = 11310906471
BaseRepresentation
bin100100101110101…
…0110100001110111
310011220000222210212
41021131112201313
510011000244343
6322143140035
742353330642
oct11135264167
93156028725
101232431223
11582747901
122a48a461b
1316843ac5a
14b9972a59
15732e4c18
hex49756877

1232431223 has 4 divisors (see below), whose sum is σ = 1243337808. Its totient is φ = 1221524640.

The previous prime is 1232431217. The next prime is 1232431237. The reversal of 1232431223 is 3221342321.

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 1232431223 - 26 = 1232431159 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1232431253) 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 3 ways as a sum of consecutive naturals, for example, 5453123 + ... + 5453348.

It is an arithmetic number, because the mean of its divisors is an integer number (310834452).

Almost surely, 21232431223 is an apocalyptic number.

1232431223 is a deficient number, since it is larger than the sum of its proper divisors (10906585).

1232431223 is a wasteful number, since it uses less digits than its factorization.

1232431223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10906584.

The product of its digits is 1728, while the sum is 23.

The square root of 1232431223 is about 35105.9998148465. Note that the first 3 decimals coincide. The cubic root of 1232431223 is about 1072.1467434703.

Adding to 1232431223 its reverse (3221342321), we get a palindrome (4453773544).

The spelling of 1232431223 in words is "one billion, two hundred thirty-two million, four hundred thirty-one thousand, two hundred twenty-three".

Divisors: 1 113 10906471 1232431223