213131222012311 has 8 divisors (see below), whose sum is σ = 219178937134800. Its totient is φ = 207164684274240.

The previous prime is 213131222012281. The next prime is 213131222012327. The reversal of 213131222012311 is 113210222131312.

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

It is a cyclic number.

It is not a de Polignac number, because 213131222012311 - 2³⁷ = 212993783058839 is a prime.

It is a super-2 number, since 2×213131222012311² (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 (213131222012351) 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, 20294340780 + ... + 20294351281.

It is an arithmetic number, because the mean of its divisors is an integer number (27397367141850).

Almost surely, 2^{213131222012311} is an apocalyptic number.

213131222012311 is a deficient number, since it is larger than the sum of its proper divisors (6047715122489).

213131222012311 is an equidigital number, since it uses as much as digits as its factorization.

213131222012311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40588692209.

The product of its (nonzero) digits is 864, while the sum is 25.

Adding to 213131222012311 its reverse (113210222131312), we get a palindrome (326341444143623).

The spelling of 213131222012311 in words is "two hundred thirteen trillion, one hundred thirty-one billion, two hundred twenty-two million, twelve thousand, three hundred eleven".