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22031000131 = 728377314387
BaseRepresentation
bin10100100001001001…
…100110001001000011
32002212101012202122211
4110201021212021003
5330104414001011
614042040442551
71406643261040
oct244111461103
962771182584
1022031000131
119385a1a528
12432a179457
1321013b726a
1410cdd301c7
1588e203b21
hex521266243

22031000131 has 16 divisors (see below), whose sum is σ = 25301700864. Its totient is φ = 18791338464.

The previous prime is 22031000119. The next prime is 22031000177. The reversal of 22031000131 is 13100013022.

It is a cyclic number.

It is not a de Polignac number, because 22031000131 - 29 = 22030999619 is a prime.

It is a super-2 number, since 2×220310001312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22031000191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1524120 + ... + 1538506.

It is an arithmetic number, because the mean of its divisors is an integer number (1581356304).

Almost surely, 222031000131 is an apocalyptic number.

22031000131 is a deficient number, since it is larger than the sum of its proper divisors (3270700733).

22031000131 is a wasteful number, since it uses less digits than its factorization.

22031000131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15450.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 22031000131 its reverse (13100013022), we get a palindrome (35131013153).

The spelling of 22031000131 in words is "twenty-two billion, thirty-one million, one hundred thirty-one", and thus it is an aban number.

Divisors: 1 7 283 773 1981 5411 14387 100709 218759 1531313 4071521 11121151 28500647 77848057 3147285733 22031000131