213506232011311 has 8 divisors (see below), whose sum is σ = 221079067398000. Its totient is φ = 205947433392960.

The previous prime is 213506232011309. The next prime is 213506232011323. The reversal of 213506232011311 is 113110232605312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 213506232011311 - 2¹ = 213506232011309 is a prime.

It is a super-2 number, since 2×213506232011311² (a number of 29 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 (213506232011411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3509161125 + ... + 3509221966.

It is an arithmetic number, because the mean of its divisors is an integer number (27634883424750).

Almost surely, 2^{213506232011311} is an apocalyptic number.

213506232011311 is a deficient number, since it is larger than the sum of its proper divisors (7572835386689).

213506232011311 is a wasteful number, since it uses less digits than its factorization.

213506232011311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7018384169.

The product of its (nonzero) digits is 6480, while the sum is 31.

Adding to 213506232011311 its reverse (113110232605312), we get a palindrome (326616464616623).

The spelling of 213506232011311 in words is "two hundred thirteen trillion, five hundred six billion, two hundred thirty-two million, eleven thousand, three hundred eleven".