213431221302 has 32 divisors (see below), whose sum is σ = 460252675680. Its totient is φ = 65591907840.

The previous prime is 213431221301. The next prime is 213431221303. The reversal of 213431221302 is 203122134312.

It is an interprime number because it is at equal distance from previous prime (213431221301) and next prime (213431221303).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213431221301) 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 15 ways as a sum of consecutive naturals, for example, 1585699 + ... + 1715022.

It is an arithmetic number, because the mean of its divisors is an integer number (14382896115).

Almost surely, 2^213431221302 is an apocalyptic number.

213431221302 is an abundant number, since it is smaller than the sum of its proper divisors (246821454378).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213431221302 is a wasteful number, since it uses less digits than its factorization.

213431221302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3301568.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 213431221302 its reverse (203122134312), we get a palindrome (416553355614).

The spelling of 213431221302 in words is "two hundred thirteen billion, four hundred thirty-one million, two hundred twenty-one thousand, three hundred two".