32131021213 has 4 divisors (see below), whose sum is σ = 32131406268. Its totient is φ = 32130636160.

The previous prime is 32131021189. The next prime is 32131021243. The reversal of 32131021213 is 31212013123.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 24045774489 + 8085246724 = 155067^2 + 89918^2 .

It is a cyclic number.

It is not a de Polignac number, because 32131021213 - 2²⁵ = 32097466781 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32131021243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9118 + ... + 253663.

It is an arithmetic number, because the mean of its divisors is an integer number (8032851567).

Almost surely, 2^32131021213 is an apocalyptic number.

It is an amenable number.

32131021213 is a deficient number, since it is larger than the sum of its proper divisors (385055).

32131021213 is a wasteful number, since it uses less digits than its factorization.

32131021213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385054.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 32131021213 its reverse (31212013123), we get a palindrome (63343034336).

The spelling of 32131021213 in words is "thirty-two billion, one hundred thirty-one million, twenty-one thousand, two hundred thirteen".