213323423432431 has 8 divisors (see below), whose sum is σ = 233499030945824. Its totient is φ = 193685832119520.

The previous prime is 213323423432393. The next prime is 213323423432453. The reversal of 213323423432431 is 134234324323312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 213323423432431 - 2⁹ = 213323423431919 is a prime.

It is a super-2 number, since 2×213323423432431² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213323423432531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134504049291 + ... + 134504050876.

It is an arithmetic number, because the mean of its divisors is an integer number (29187378868228).

Almost surely, 2^{213323423432431} is an apocalyptic number.

213323423432431 is a deficient number, since it is larger than the sum of its proper divisors (20175607513393).

213323423432431 is a wasteful number, since it uses less digits than its factorization.

213323423432431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269008100241.

The product of its digits is 746496, while the sum is 40.

Adding to 213323423432431 its reverse (134234324323312), we get a palindrome (347557747755743).

The spelling of 213323423432431 in words is "two hundred thirteen trillion, three hundred twenty-three billion, four hundred twenty-three million, four hundred thirty-two thousand, four hundred thirty-one".