213423433129 has 4 divisors (see below), whose sum is σ = 216347041876. Its totient is φ = 210499824384.

The previous prime is 213423433103. The next prime is 213423433159. The reversal of 213423433129 is 921334324312.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 45647177104 + 167776256025 = 213652^2 + 409605^2 .

It is a cyclic number.

It is not a de Polignac number, because 213423433129 - 2¹³ = 213423424937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213423433159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1461804264 + ... + 1461804409.

It is an arithmetic number, because the mean of its divisors is an integer number (54086760469).

Almost surely, 2^213423433129 is an apocalyptic number.

It is an amenable number.

213423433129 is a deficient number, since it is larger than the sum of its proper divisors (2923608747).

213423433129 is an equidigital number, since it uses as much as digits as its factorization.

213423433129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2923608746.

The product of its digits is 93312, while the sum is 37.

The spelling of 213423433129 in words is "two hundred thirteen billion, four hundred twenty-three million, four hundred thirty-three thousand, one hundred twenty-nine".