211142023423 has 2 divisors, whose sum is σ = 211142023424. Its totient is φ = 211142023422.

The previous prime is 211142023399. The next prime is 211142023429. The reversal of 211142023423 is 324320241112.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211142023423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211142023429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105571011711 + 105571011712.

It is an arithmetic number, because the mean of its divisors is an integer number (105571011712).

Almost surely, 2^211142023423 is an apocalyptic number.

211142023423 is a deficient number, since it is larger than the sum of its proper divisors (1).

211142023423 is an equidigital number, since it uses as much as digits as its factorization.

211142023423 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 211142023423 its reverse (324320241112), we get a palindrome (535462264535).

The spelling of 211142023423 in words is "two hundred eleven billion, one hundred forty-two million, twenty-three thousand, four hundred twenty-three".