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22003031023 = 111771968599
BaseRepresentation
bin10100011111011110…
…111001101111101111
32002210102120210020221
4110133132321233233
5330030233443043
614035201152211
71406153451331
oct243736715757
962712523227
1022003031023
119371156966
12432092b667
1320c86737ac
1410ca32d451
1588ba2b8ed
hex51f7b9bef

22003031023 has 4 divisors (see below), whose sum is σ = 22005010800. Its totient is φ = 22001051248.

The previous prime is 22003030979. The next prime is 22003031053. The reversal of 22003031023 is 32013030022.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32013030022 = 216006515011.

It is a cyclic number.

It is not a de Polignac number, because 22003031023 - 213 = 22003022831 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22003030988 and 22003031006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22003031053) 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, 973123 + ... + 995476.

It is an arithmetic number, because the mean of its divisors is an integer number (5501252700).

Almost surely, 222003031023 is an apocalyptic number.

22003031023 is a deficient number, since it is larger than the sum of its proper divisors (1979777).

22003031023 is a wasteful number, since it uses less digits than its factorization.

22003031023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1979776.

The product of its (nonzero) digits is 216, while the sum is 16.

Adding to 22003031023 its reverse (32013030022), we get a palindrome (54016061045).

The spelling of 22003031023 in words is "twenty-two billion, three million, thirty-one thousand, twenty-three".

Divisors: 1 11177 1968599 22003031023