1213423125231 has 8 divisors (see below), whose sum is σ = 1621932159024. Its totient is φ = 806931420800.

The previous prime is 1213423125179. The next prime is 1213423125281. The reversal of 1213423125231 is 1325213243121.

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 1213423125231 - 2¹⁵ = 1213423092463 is a prime.

It is a super-2 number, since 2×1213423125231² (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 (1213423125281) 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, 504330936 + ... + 504333341.

It is an arithmetic number, because the mean of its divisors is an integer number (202741519878).

Almost surely, 2^{1213423125231} is an apocalyptic number.

1213423125231 is a deficient number, since it is larger than the sum of its proper divisors (408509033793).

1213423125231 is a wasteful number, since it uses less digits than its factorization.

1213423125231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1008664681.

The product of its digits is 8640, while the sum is 30.

Adding to 1213423125231 its reverse (1325213243121), we get a palindrome (2538636368352).

The spelling of 1213423125231 in words is "one trillion, two hundred thirteen billion, four hundred twenty-three million, one hundred twenty-five thousand, two hundred thirty-one".