213404301331 has 4 divisors (see below), whose sum is σ = 229820016832. Its totient is φ = 196988585832.

The previous prime is 213404301301. The next prime is 213404301353. The reversal of 213404301331 is 133103404312.

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 213404301331 - 2¹³ = 213404293139 is a prime.

It is a super-3 number, since 3×213404301331³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213404301296 and 213404301305.

It is not an unprimeable number, because it can be changed into a prime (213404301301) 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, 8207857731 + ... + 8207857756.

It is an arithmetic number, because the mean of its divisors is an integer number (57455004208).

Almost surely, 2^213404301331 is an apocalyptic number.

213404301331 is a deficient number, since it is larger than the sum of its proper divisors (16415715501).

213404301331 is a wasteful number, since it uses less digits than its factorization.

213404301331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16415715500.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 213404301331 its reverse (133103404312), we get a palindrome (346507705643).

The spelling of 213404301331 in words is "two hundred thirteen billion, four hundred four million, three hundred one thousand, three hundred thirty-one".