1243312242430 has 32 divisors (see below), whose sum is σ = 2310669527040. Its totient is φ = 481174832160.

The previous prime is 1243312242421. The next prime is 1243312242439. The reversal of 1243312242430 is 342422133421.

It is an interprime number because it is at equal distance from previous prime (1243312242421) and next prime (1243312242439).

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a junction number, because it is equal to n+sod(n) for n = 1243312242392 and 1243312242401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1243312242439) 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, 952231 + ... + 1842109.

It is an arithmetic number, because the mean of its divisors is an integer number (72208422720).

Almost surely, 2^{1243312242430} is an apocalyptic number.

1243312242430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1243312242430 is a deficient number, since it is larger than the sum of its proper divisors (1067357284610).

1243312242430 is a wasteful number, since it uses less digits than its factorization.

1243312242430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 894424.

The product of its (nonzero) digits is 27648, while the sum is 31.

Adding to 1243312242430 its reverse (342422133421), we get a palindrome (1585734375851).

The spelling of 1243312242430 in words is "one trillion, two hundred forty-three billion, three hundred twelve million, two hundred forty-two thousand, four hundred thirty".