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12102322031 = 53401226631
BaseRepresentation
bin10110100010101101…
…01100011101101111
31011020102122122210022
423101112230131233
5144241143301111
65320522432355
7605623016462
oct132126543557
934212578708
1012102322031
115150499738
1224190626bb
1311ab40c1c7
1482b4552d9
154ac7332db
hex2d15ac76f

12102322031 has 4 divisors (see below), whose sum is σ = 12102602064. Its totient is φ = 12102042000.

The previous prime is 12102322019. The next prime is 12102322051. The reversal of 12102322031 is 13022320121.

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 12102322031 - 214 = 12102305647 is a prime.

It is a super-2 number, since 2×121023220312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12102322051) 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, 59915 + ... + 166716.

It is an arithmetic number, because the mean of its divisors is an integer number (3025650516).

Almost surely, 212102322031 is an apocalyptic number.

12102322031 is a deficient number, since it is larger than the sum of its proper divisors (280033).

12102322031 is an equidigital number, since it uses as much as digits as its factorization.

12102322031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280032.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 12102322031 its reverse (13022320121), we get a palindrome (25124642152).

The spelling of 12102322031 in words is "twelve billion, one hundred two million, three hundred twenty-two thousand, thirty-one".

Divisors: 1 53401 226631 12102322031