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1213322230231 = 19126115063759
BaseRepresentation
bin10001101001111111101…
…000111111100111010111
311021222210111211112012221
4101221333220333213113
5124334340442331411
62325220442123211
7153442153535266
oct21517750774727
94258714745187
101213322230231
11428626849921
121771971b0507
138a55366ba87
1442a219b25dd
152186458d071
hex11a7fa3f9d7

1213322230231 has 8 divisors (see below), whose sum is σ = 1277282822400. Its totient is φ = 1149371790840.

The previous prime is 1213322230199. The next prime is 1213322230271. The reversal of 1213322230231 is 1320322233121.

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 1213322230231 - 25 = 1213322230199 is a prime.

It is a super-2 number, since 2×12133222302312 (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1213322230196 and 1213322230205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213322230271) 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, 2292271 + ... + 2771488.

It is an arithmetic number, because the mean of its divisors is an integer number (159660352800).

Almost surely, 21213322230231 is an apocalyptic number.

1213322230231 is a deficient number, since it is larger than the sum of its proper divisors (63960592169).

1213322230231 is a wasteful number, since it uses less digits than its factorization.

1213322230231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5076389.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 1213322230231 its reverse (1320322233121), we get a palindrome (2533644463352).

The spelling of 1213322230231 in words is "one trillion, two hundred thirteen billion, three hundred twenty-two million, two hundred thirty thousand, two hundred thirty-one".

Divisors: 1 19 12611 239609 5063759 96211421 63859064749 1213322230231