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1213322023 = 3073952189
BaseRepresentation
bin100100001010001…
…1101001100100111
310010120002010220201
41020110131030213
54441102301043
6320221411331
742032031664
oct11024351447
93116063821
101213322023
11572985881
1229a409b47
131644aa134
14b71daa6b
15717bcc4d
hex4851d327

1213322023 has 4 divisors (see below), whose sum is σ = 1217274520. Its totient is φ = 1209369528.

The previous prime is 1213322021. The next prime is 1213322029. The reversal of 1213322023 is 3202233121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3202233121 = 23139227527.

It is a cyclic number.

It is not a de Polignac number, because 1213322023 - 21 = 1213322021 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 (1213322021) 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, 1975788 + ... + 1976401.

It is an arithmetic number, because the mean of its divisors is an integer number (304318630).

Almost surely, 21213322023 is an apocalyptic number.

1213322023 is a deficient number, since it is larger than the sum of its proper divisors (3952497).

1213322023 is an equidigital number, since it uses as much as digits as its factorization.

1213322023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3952496.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 1213322023 is about 34832.7722554493. The cubic root of 1213322023 is about 1066.5765399220.

Adding to 1213322023 its reverse (3202233121), we get a palindrome (4415555144).

The spelling of 1213322023 in words is "one billion, two hundred thirteen million, three hundred twenty-two thousand, twenty-three".

Divisors: 1 307 3952189 1213322023