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12210323431 = 31974060633
BaseRepresentation
bin10110101111100101…
…01011111111100111
31011111221212200212011
423113302223333213
5200001320322211
65335341335051
7611404015405
oct132762537747
934457780764
1012210323431
1151a6455799
122449267487
1311c78c4967
1483b92a475
154b6e68921
hex2d7cabfe7

12210323431 has 8 divisors (see below), whose sum is σ = 12734148224. Its totient is φ = 11694620160.

The previous prime is 12210323429. The next prime is 12210323441. The reversal of 12210323431 is 13432301221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12210323431 - 21 = 12210323429 is a prime.

It is a super-2 number, since 2×122103234312 (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 (12210323441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2027310 + ... + 2033323.

It is an arithmetic number, because the mean of its divisors is an integer number (1591768528).

Almost surely, 212210323431 is an apocalyptic number.

12210323431 is a deficient number, since it is larger than the sum of its proper divisors (523824793).

12210323431 is an equidigital number, since it uses as much as digits as its factorization.

12210323431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4060761.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 12210323431 its reverse (13432301221), we get a palindrome (25642624652).

The spelling of 12210323431 in words is "twelve billion, two hundred ten million, three hundred twenty-three thousand, four hundred thirty-one".

Divisors: 1 31 97 3007 4060633 125879623 393881401 12210323431