1243433331097 has 4 divisors (see below), whose sum is σ = 1243493680336. Its totient is φ = 1243372981860.

The previous prime is 1243433331067. The next prime is 1243433331113. The reversal of 1243433331097 is 7901333343421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1243433331097 - 2²⁷ = 1243299113369 is a prime.

It is a super-2 number, since 2×1243433331097² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1243433331067) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30143703 + ... + 30184924.

It is an arithmetic number, because the mean of its divisors is an integer number (310873420084).

Almost surely, 2^{1243433331097} is an apocalyptic number.

It is an amenable number.

1243433331097 is a deficient number, since it is larger than the sum of its proper divisors (60349239).

1243433331097 is an equidigital number, since it uses as much as digits as its factorization.

1243433331097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60349238.

The product of its (nonzero) digits is 489888, while the sum is 43.

The spelling of 1243433331097 in words is "one trillion, two hundred forty-three billion, four hundred thirty-three million, three hundred thirty-one thousand, ninety-seven".