213321301331 has 16 divisors (see below), whose sum is σ = 235294836480. Its totient is φ = 192513853440.

The previous prime is 213321301321. The next prime is 213321301373. The reversal of 213321301331 is 133103123312.

It is not a de Polignac number, because 213321301331 - 2⁶ = 213321301267 is a prime.

It is a super-2 number, since 2×213321301331² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213321301297 and 213321301306.

It is not an unprimeable number, because it can be changed into a prime (213321301321) 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, 1799366 + ... + 1914251.

It is an arithmetic number, because the mean of its divisors is an integer number (14705927280).

Almost surely, 2^213321301331 is an apocalyptic number.

213321301331 is a deficient number, since it is larger than the sum of its proper divisors (21973535149).

213321301331 is a wasteful number, since it uses less digits than its factorization.

213321301331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3713774.

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 213321301331 its reverse (133103123312), we get a palindrome (346424424643).

The spelling of 213321301331 in words is "two hundred thirteen billion, three hundred twenty-one million, three hundred one thousand, three hundred thirty-one".