213411431 has 2 divisors, whose sum is σ = 213411432. Its totient is φ = 213411430.

The previous prime is 213411413. The next prime is 213411433. The reversal of 213411431 is 134114312.

Together with previous prime (213411413) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 213411431 - 2¹⁴ = 213395047 is a prime.

It is a super-2 number, since 2×213411431² = 91088877762935522, which contains 22 as substring.

Together with 213411433, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213411433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106705715 + 106705716.

It is an arithmetic number, because the mean of its divisors is an integer number (106705716).

Almost surely, 2^213411431 is an apocalyptic number.

213411431 is a deficient number, since it is larger than the sum of its proper divisors (1).

213411431 is an equidigital number, since it uses as much as digits as its factorization.

213411431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 288, while the sum is 20.

The square root of 213411431 is about 14608.6081130271. The cubic root of 213411431 is about 597.5935379898.

Adding to 213411431 its reverse (134114312), we get a palindrome (347525743).

It can be divided in two parts, 2 and 13411431, that multiplied together give a palindrome (26822862).

The spelling of 213411431 in words is "two hundred thirteen million, four hundred eleven thousand, four hundred thirty-one".