213321201031 has 4 divisors (see below), whose sum is σ = 225869506992. Its totient is φ = 200772895072.

The previous prime is 213321201029. The next prime is 213321201047. The reversal of 213321201031 is 130102123312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 213321201031 - 2¹ = 213321201029 is a prime.

It is a super-2 number, since 2×213321201031² (a number of 23 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 (213321211031) 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, 6274152955 + ... + 6274152988.

It is an arithmetic number, because the mean of its divisors is an integer number (56467376748).

Almost surely, 2^213321201031 is an apocalyptic number.

213321201031 is a deficient number, since it is larger than the sum of its proper divisors (12548305961).

213321201031 is a wasteful number, since it uses less digits than its factorization.

213321201031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12548305960.

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

Adding to 213321201031 its reverse (130102123312), we get a palindrome (343423324343).

The spelling of 213321201031 in words is "two hundred thirteen billion, three hundred twenty-one million, two hundred one thousand, thirty-one".