213431342023 has 2 divisors, whose sum is σ = 213431342024. Its totient is φ = 213431342022.

The previous prime is 213431342011. The next prime is 213431342057. The reversal of 213431342023 is 320243134312.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213431342023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 213431341982 and 213431342000.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213431342083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106715671011 + 106715671012.

It is an arithmetic number, because the mean of its divisors is an integer number (106715671012).

Almost surely, 2^213431342023 is an apocalyptic number.

213431342023 is a deficient number, since it is larger than the sum of its proper divisors (1).

213431342023 is an equidigital number, since it uses as much as digits as its factorization.

213431342023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 213431342023 its reverse (320243134312), we get a palindrome (533674476335).

The spelling of 213431342023 in words is "two hundred thirteen billion, four hundred thirty-one million, three hundred forty-two thousand, twenty-three".