213020281423 has 2 divisors, whose sum is σ = 213020281424. Its totient is φ = 213020281422.

The previous prime is 213020281391. The next prime is 213020281457. The reversal of 213020281423 is 324182020312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 213020281423 - 2⁵ = 213020281391 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 213020281391 and 213020281400.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213020281493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106510140711 + 106510140712.

It is an arithmetic number, because the mean of its divisors is an integer number (106510140712).

Almost surely, 2^213020281423 is an apocalyptic number.

213020281423 is a deficient number, since it is larger than the sum of its proper divisors (1).

213020281423 is an equidigital number, since it uses as much as digits as its factorization.

213020281423 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 28.

The spelling of 213020281423 in words is "two hundred thirteen billion, twenty million, two hundred eighty-one thousand, four hundred twenty-three".