213112400343431 has 2 divisors, whose sum is σ = 213112400343432. Its totient is φ = 213112400343430.

The previous prime is 213112400343419. The next prime is 213112400343443. The reversal of 213112400343431 is 134343004211312.

213112400343431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (213112400343419) and next prime (213112400343443).

It is a cyclic number.

It is not a de Polignac number, because 213112400343431 - 2⁴⁶ = 142743656165767 is a prime.

It is a super-2 number, since 2×213112400343431² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213112400343481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106556200171715 + 106556200171716.

It is an arithmetic number, because the mean of its divisors is an integer number (106556200171716).

Almost surely, 2^{213112400343431} is an apocalyptic number.

213112400343431 is a deficient number, since it is larger than the sum of its proper divisors (1).

213112400343431 is an equidigital number, since it uses as much as digits as its factorization.

213112400343431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 32.

Adding to 213112400343431 its reverse (134343004211312), we get a palindrome (347455404554743).

The spelling of 213112400343431 in words is "two hundred thirteen trillion, one hundred twelve billion, four hundred million, three hundred forty-three thousand, four hundred thirty-one".