1213423420231 has 8 divisors (see below), whose sum is σ = 1331129808000. Its totient is φ = 1096949560440.

The previous prime is 1213423420219. The next prime is 1213423420271. The reversal of 1213423420231 is 1320243243121.

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 1213423420231 - 2¹⁹ = 1213422895943 is a prime.

It is a super-2 number, since 2×1213423420231² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1213423420231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213423420271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 308129931 + ... + 308133868.

It is an arithmetic number, because the mean of its divisors is an integer number (166391226000).

Almost surely, 2^{1213423420231} is an apocalyptic number.

1213423420231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1213423420231 is a deficient number, since it is larger than the sum of its proper divisors (117706387769).

1213423420231 is a wasteful number, since it uses less digits than its factorization.

1213423420231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 616263989.

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 1213423420231 its reverse (1320243243121), we get a palindrome (2533666663352).

The spelling of 1213423420231 in words is "one trillion, two hundred thirteen billion, four hundred twenty-three million, four hundred twenty thousand, two hundred thirty-one".