231212434033 has 4 divisors (see below), whose sum is σ = 264242781760. Its totient is φ = 198182086308.

The previous prime is 231212433973. The next prime is 231212434067. The reversal of 231212434033 is 330434212132.

It is a happy number.

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 231212434033 - 2²⁵ = 231178879601 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231212433992 and 231212434010.

It is not an unprimeable number, because it can be changed into a prime (231212437033) 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, 16515173853 + ... + 16515173866.

It is an arithmetic number, because the mean of its divisors is an integer number (66060695440).

Almost surely, 2^231212434033 is an apocalyptic number.

It is an amenable number.

231212434033 is a deficient number, since it is larger than the sum of its proper divisors (33030347727).

231212434033 is an equidigital number, since it uses as much as digits as its factorization.

231212434033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33030347726.

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 231212434033 its reverse (330434212132), we get a palindrome (561646646165).

The spelling of 231212434033 in words is "two hundred thirty-one billion, two hundred twelve million, four hundred thirty-four thousand, thirty-three".