213231004133 has 4 divisors (see below), whose sum is σ = 243692576160. Its totient is φ = 182769432108.

The previous prime is 213231004127. The next prime is 213231004141. The reversal of 213231004133 is 331400132312.

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 213231004133 - 2⁴ = 213231004117 is a prime.

It is a super-2 number, since 2×213231004133² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213231004099 and 213231004108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213231004433) 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, 15230786003 + ... + 15230786016.

It is an arithmetic number, because the mean of its divisors is an integer number (60923144040).

Almost surely, 2^213231004133 is an apocalyptic number.

It is an amenable number.

213231004133 is a deficient number, since it is larger than the sum of its proper divisors (30461572027).

213231004133 is an equidigital number, since it uses as much as digits as its factorization.

213231004133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30461572026.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 213231004133 its reverse (331400132312), we get a palindrome (544631136445).

The spelling of 213231004133 in words is "two hundred thirteen billion, two hundred thirty-one million, four thousand, one hundred thirty-three".