213436031 has 4 divisors (see below), whose sum is σ = 213603672. Its totient is φ = 213268392.

The previous prime is 213436019. The next prime is 213436033. The reversal of 213436031 is 130634312.

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 213436031 - 2⁶ = 213435967 is a prime.

It is a super-2 number, since 2×213436031² = 91109878658065922, 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 = 213435988 and 213436006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213436033) 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, 81896 + ... + 84461.

It is an arithmetic number, because the mean of its divisors is an integer number (53400918).

Almost surely, 2^213436031 is an apocalyptic number.

213436031 is a deficient number, since it is larger than the sum of its proper divisors (167641).

213436031 is a wasteful number, since it uses less digits than its factorization.

213436031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167640.

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

The square root of 213436031 is about 14609.4500580960. The cubic root of 213436031 is about 597.6164987034.

The spelling of 213436031 in words is "two hundred thirteen million, four hundred thirty-six thousand, thirty-one".