1243021034311 has 8 divisors (see below), whose sum is σ = 1420653232800. Its totient is φ = 1065403277088.

The previous prime is 1243021034309. The next prime is 1243021034371. The reversal of 1243021034311 is 1134301203421.

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 1243021034311 - 2¹ = 1243021034309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1243021034371) 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, 3425236 + ... + 3770713.

It is an arithmetic number, because the mean of its divisors is an integer number (177581654100).

Almost surely, 2^{1243021034311} is an apocalyptic number.

1243021034311 is a deficient number, since it is larger than the sum of its proper divisors (177632198489).

1243021034311 is an equidigital number, since it uses as much as digits as its factorization.

1243021034311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7220633.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 1243021034311 its reverse (1134301203421), we get a palindrome (2377322237732).

The spelling of 1243021034311 in words is "one trillion, two hundred forty-three billion, twenty-one million, thirty-four thousand, three hundred eleven".