213232132331 has 16 divisors (see below), whose sum is σ = 219095255808. Its totient is φ = 207473916000.

The previous prime is 213232132307. The next prime is 213232132363. The reversal of 213232132331 is 133231232312.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213232132331 is a prime.

It is a super-2 number, since 2×213232132331² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 213232132331.

It is not an unprimeable number, because it can be changed into a prime (213232132381) 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, 1284560 + ... + 1441026.

It is an arithmetic number, because the mean of its divisors is an integer number (13693453488).

Almost surely, 2^213232132331 is an apocalyptic number.

213232132331 is a deficient number, since it is larger than the sum of its proper divisors (5863123477).

213232132331 is a wasteful number, since it uses less digits than its factorization.

213232132331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156802.

The product of its digits is 3888, while the sum is 26.

Adding to 213232132331 its reverse (133231232312), we get a palindrome (346463364643).

The spelling of 213232132331 in words is "two hundred thirteen billion, two hundred thirty-two million, one hundred thirty-two thousand, three hundred thirty-one".