213322321231431 has 16 divisors (see below), whose sum is σ = 301163928876000. Its totient is φ = 133847964136448.

The previous prime is 213322321231427. The next prime is 213322321231549. The reversal of 213322321231431 is 134132123223312.

It is a cyclic number.

It is not a de Polignac number, because 213322321231431 - 2² = 213322321231427 is a prime.

It is a super-2 number, since 2×213322321231431² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 213322321231392 and 213322321231401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213322321231231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15692406 + ... + 25940243.

It is an arithmetic number, because the mean of its divisors is an integer number (18822745554750).

Almost surely, 2^{213322321231431} is an apocalyptic number.

213322321231431 is a deficient number, since it is larger than the sum of its proper divisors (87841607644569).

213322321231431 is a wasteful number, since it uses less digits than its factorization.

213322321231431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41733138.

The product of its digits is 31104, while the sum is 33.

Adding to 213322321231431 its reverse (134132123223312), we get a palindrome (347454444454743).

The spelling of 213322321231431 in words is "two hundred thirteen trillion, three hundred twenty-two billion, three hundred twenty-one million, two hundred thirty-one thousand, four hundred thirty-one".