213040304431 has 2 divisors, whose sum is σ = 213040304432. Its totient is φ = 213040304430.

The previous prime is 213040304401. The next prime is 213040304461. The reversal of 213040304431 is 134403040312.

It is a balanced prime because it is at equal distance from previous prime (213040304401) and next prime (213040304461).

It is a cyclic number.

It is not a de Polignac number, because 213040304431 - 2⁹ = 213040303919 is a prime.

It is a super-2 number, since 2×213040304431² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 213040304396 and 213040304405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213040304401) 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 as a sum of consecutive naturals, namely, 106520152215 + 106520152216.

It is an arithmetic number, because the mean of its divisors is an integer number (106520152216).

Almost surely, 2^213040304431 is an apocalyptic number.

213040304431 is a deficient number, since it is larger than the sum of its proper divisors (1).

213040304431 is an equidigital number, since it uses as much as digits as its factorization.

213040304431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 213040304431 its reverse (134403040312), we get a palindrome (347443344743).

The spelling of 213040304431 in words is "two hundred thirteen billion, forty million, three hundred four thousand, four hundred thirty-one".