234312133421 has 4 divisors (see below), whose sum is σ = 234325327392. Its totient is φ = 234298939452.

The previous prime is 234312133337. The next prime is 234312133459. The reversal of 234312133421 is 124331213432.

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 a de Polignac number, because none of the positive numbers 2^k-234312133421 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 (234312133021) 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, 6570311 + ... + 6605876.

It is an arithmetic number, because the mean of its divisors is an integer number (58581331848).

Almost surely, 2^234312133421 is an apocalyptic number.

It is an amenable number.

234312133421 is a deficient number, since it is larger than the sum of its proper divisors (13193971).

234312133421 is a wasteful number, since it uses less digits than its factorization.

234312133421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13193970.

The product of its digits is 10368, while the sum is 29.

Adding to 234312133421 its reverse (124331213432), we get a palindrome (358643346853).

The spelling of 234312133421 in words is "two hundred thirty-four billion, three hundred twelve million, one hundred thirty-three thousand, four hundred twenty-one".