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1210203313231 = 11449245030029
BaseRepresentation
bin10001100111000101101…
…111010001010001001111
311021200202011001010102111
4101213011233101101033
5124311444022010411
62323543145004451
7153301652301643
oct21470557212117
94250664033374
101210203313231
11427276247370
12176666783727
138a17744c563
1442807692c23
1521730859721
hex119c5bd144f

1210203313231 has 8 divisors (see below), whose sum is σ = 1323162162000. Its totient is φ = 1097734525440.

The previous prime is 1210203313229. The next prime is 1210203313243. The reversal of 1210203313231 is 1323133020121.

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 1210203313231 - 21 = 1210203313229 is a prime.

It is a super-2 number, since 2×12102033132312 (a number of 25 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 (1210203713231) 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, 122510076 + ... + 122519953.

It is an arithmetic number, because the mean of its divisors is an integer number (165395270250).

Almost surely, 21210203313231 is an apocalyptic number.

1210203313231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1210203313231 is a deficient number, since it is larger than the sum of its proper divisors (112958848769).

1210203313231 is a wasteful number, since it uses less digits than its factorization.

1210203313231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245030489.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 1210203313231 its reverse (1323133020121), we get a palindrome (2533336333352).

The spelling of 1210203313231 in words is "one trillion, two hundred ten billion, two hundred three million, three hundred thirteen thousand, two hundred thirty-one".

Divisors: 1 11 449 4939 245030029 2695330319 110018483021 1210203313231