213233111431 has 2 divisors, whose sum is σ = 213233111432. Its totient is φ = 213233111430.

The previous prime is 213233111423. The next prime is 213233111491. The reversal of 213233111431 is 134111332312.

213233111431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 213233111431 - 2³ = 213233111423 is a prime.

It is a super-2 number, since 2×213233111431² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 213233111396 and 213233111405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213233111491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106616555715 + 106616555716.

It is an arithmetic number, because the mean of its divisors is an integer number (106616555716).

Almost surely, 2^213233111431 is an apocalyptic number.

213233111431 is a deficient number, since it is larger than the sum of its proper divisors (1).

213233111431 is an equidigital number, since it uses as much as digits as its factorization.

213233111431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1296, while the sum is 25.

Adding to 213233111431 its reverse (134111332312), we get a palindrome (347344443743).

The spelling of 213233111431 in words is "two hundred thirteen billion, two hundred thirty-three million, one hundred eleven thousand, four hundred thirty-one".