1231224767643 has 16 divisors (see below), whose sum is σ = 1774204006176. Its totient is φ = 754980414720.

The previous prime is 1231224767609. The next prime is 1231224767687. The reversal of 1231224767643 is 3467674221321.

It is not a de Polignac number, because 1231224767643 - 2²⁹ = 1230687896731 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1231224767592 and 1231224767601.

It is not an unprimeable number, because it can be changed into a prime (1231224767693) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56163180 + ... + 56185097.

It is an arithmetic number, because the mean of its divisors is an integer number (110887750386).

Almost surely, 2^{1231224767643} is an apocalyptic number.

1231224767643 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1231224767643 is a deficient number, since it is larger than the sum of its proper divisors (542979238533).

1231224767643 is a wasteful number, since it uses less digits than its factorization.

1231224767643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112348574.

The product of its digits is 2032128, while the sum is 48.

Adding to 1231224767643 its reverse (3467674221321), we get a palindrome (4698898988964).

The spelling of 1231224767643 in words is "one trillion, two hundred thirty-one billion, two hundred twenty-four million, seven hundred sixty-seven thousand, six hundred forty-three".