213022031 has 2 divisors, whose sum is σ = 213022032. Its totient is φ = 213022030.

The previous prime is 213022003. The next prime is 213022097. The reversal of 213022031 is 130220312.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 213022031 - 2¹⁴ = 213005647 is a prime.

It is a super-2 number, since 2×213022031² = 90756771382729922, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 213021997 and 213022015.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213022331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106511015 + 106511016.

It is an arithmetic number, because the mean of its divisors is an integer number (106511016).

Almost surely, 2^213022031 is an apocalyptic number.

213022031 is a deficient number, since it is larger than the sum of its proper divisors (1).

213022031 is an equidigital number, since it uses as much as digits as its factorization.

213022031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 213022031 is about 14595.2742694339. The cubic root of 213022031 is about 597.2298514406.

Adding to 213022031 its reverse (130220312), we get a palindrome (343242343).

It can be divided in two parts, 2 and 13022031, that multiplied together give a palindrome (26044062).

The spelling of 213022031 in words is "two hundred thirteen million, twenty-two thousand, thirty-one".