1213421130231 has 32 divisors (see below), whose sum is σ = 1781132379840. Its totient is φ = 731376715776.

The previous prime is 1213421130227. The next prime is 1213421130287. The reversal of 1213421130231 is 1320311243121.

It is not a de Polignac number, because 1213421130231 - 2² = 1213421130227 is a prime.

It is a super-2 number, since 2×1213421130231² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213421130221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1790956 + ... + 2373681.

It is an arithmetic number, because the mean of its divisors is an integer number (55660386870).

Almost surely, 2^{1213421130231} is an apocalyptic number.

1213421130231 is a deficient number, since it is larger than the sum of its proper divisors (567711249609).

1213421130231 is a wasteful number, since it uses less digits than its factorization.

1213421130231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4164883.

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 1213421130231 its reverse (1320311243121), we get a palindrome (2533732373352).

The spelling of 1213421130231 in words is "one trillion, two hundred thirteen billion, four hundred twenty-one million, one hundred thirty thousand, two hundred thirty-one".