213334031 has 4 divisors (see below), whose sum is σ = 213592200. Its totient is φ = 213075864.

The previous prime is 213334027. The next prime is 213334061. The reversal of 213334031 is 130433312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 213334031 - 2² = 213334027 is a prime.

It is a super-2 number, since 2×213334031² = 91022817565417922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213333994 and 213334012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213334001) 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, 127841 + ... + 129498.

It is an arithmetic number, because the mean of its divisors is an integer number (53398050).

Almost surely, 2^213334031 is an apocalyptic number.

213334031 is a deficient number, since it is larger than the sum of its proper divisors (258169).

213334031 is an equidigital number, since it uses as much as digits as its factorization.

213334031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258168.

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 213334031 is about 14605.9587497706. The cubic root of 213334031 is about 597.5212842333.

Adding to 213334031 its reverse (130433312), we get a palindrome (343767343).

The spelling of 213334031 in words is "two hundred thirteen million, three hundred thirty-four thousand, thirty-one".