1243024320431 has 8 divisors (see below), whose sum is σ = 1249811712000. Its totient is φ = 1236242339640.

The previous prime is 1243024320409. The next prime is 1243024320443. The reversal of 1243024320431 is 1340234203421.

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 1243024320431 - 2²⁶ = 1242957211567 is a prime.

It is a super-2 number, since 2×1243024320431² (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 = 1243024320394 and 1243024320403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1243024320631) 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, 891551 + ... + 1811328.

It is an arithmetic number, because the mean of its divisors is an integer number (156226464000).

Almost surely, 2^{1243024320431} is an apocalyptic number.

1243024320431 is a deficient number, since it is larger than the sum of its proper divisors (6787391569).

1243024320431 is a wasteful number, since it uses less digits than its factorization.

1243024320431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2705389.

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 1243024320431 its reverse (1340234203421), we get a palindrome (2583258523852).

The spelling of 1243024320431 in words is "one trillion, two hundred forty-three billion, twenty-four million, three hundred twenty thousand, four hundred thirty-one".