1231333133343 has 16 divisors (see below), whose sum is σ = 1642477370880. Its totient is φ = 820538919936.

The previous prime is 1231333133339. The next prime is 1231333133357. The reversal of 1231333133343 is 3433313331321.

It is not a de Polignac number, because 1231333133343 - 2² = 1231333133339 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231333133543) 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, 109164778 + ... + 109176056.

It is an arithmetic number, because the mean of its divisors is an integer number (102654835680).

Almost surely, 2^{1231333133343} is an apocalyptic number.

1231333133343 is a deficient number, since it is larger than the sum of its proper divisors (411144237537).

1231333133343 is a wasteful number, since it uses less digits than its factorization.

1231333133343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23566.

The product of its digits is 52488, while the sum is 33.

Adding to 1231333133343 its reverse (3433313331321), we get a palindrome (4664646464664).

The spelling of 1231333133343 in words is "one trillion, two hundred thirty-one billion, three hundred thirty-three million, one hundred thirty-three thousand, three hundred forty-three".