213301031 has 4 divisors (see below), whose sum is σ = 213720600. Its totient is φ = 212881464.

The previous prime is 213301013. The next prime is 213301051. The reversal of 213301031 is 130103312.

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 213301031 - 2²² = 209106727 is a prime.

It is a super-2 number, since 2×213301031² = 90994659651325922, 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 = 213300997 and 213301015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213301001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 209021 + ... + 210038.

It is an arithmetic number, because the mean of its divisors is an integer number (53430150).

Almost surely, 2^213301031 is an apocalyptic number.

213301031 is a deficient number, since it is larger than the sum of its proper divisors (419569).

213301031 is an equidigital number, since it uses as much as digits as its factorization.

213301031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419568.

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 213301031 is about 14604.8290301530. The cubic root of 213301031 is about 597.4904730541.

Adding to 213301031 its reverse (130103312), we get a palindrome (343404343).

The spelling of 213301031 in words is "two hundred thirteen million, three hundred one thousand, thirty-one".