213520113441 has 12 divisors (see below), whose sum is σ = 326560173732. Its totient is φ = 133973404416.

The previous prime is 213520113437. The next prime is 213520113461. The reversal of 213520113441 is 144311025312.

213520113441 is a `hidden beast` number, since 2 + 1 + 3 + 5 + 201 + 13 + 441 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 195381680400 + 18138433041 = 442020^2 + 134679^2 .

It is not a de Polignac number, because 213520113441 - 2² = 213520113437 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (213520113461) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 697777996 + ... + 697778301.

It is an arithmetic number, because the mean of its divisors is an integer number (27213347811).

Almost surely, 2^213520113441 is an apocalyptic number.

It is an amenable number.

213520113441 is a deficient number, since it is larger than the sum of its proper divisors (113040060291).

213520113441 is a wasteful number, since it uses less digits than its factorization.

213520113441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1395556320 (or 1395556317 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

Adding to 213520113441 its reverse (144311025312), we get a palindrome (357831138753).

The spelling of 213520113441 in words is "two hundred thirteen billion, five hundred twenty million, one hundred thirteen thousand, four hundred forty-one".