213052520431 has 8 divisors (see below), whose sum is σ = 224270414720. Its totient is φ = 201835086552.

The previous prime is 213052520423. The next prime is 213052520437. The reversal of 213052520431 is 134025250312.

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 213052520431 - 2³ = 213052520423 is a prime.

It is a super-2 number, since 2×213052520431² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 213052520431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213052520437) 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, 1249966 + ... + 1410148.

It is an arithmetic number, because the mean of its divisors is an integer number (28033801840).

Almost surely, 2^213052520431 is an apocalyptic number.

213052520431 is a deficient number, since it is larger than the sum of its proper divisors (11217894289).

213052520431 is a wasteful number, since it uses less digits than its factorization.

213052520431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230205.

The product of its (nonzero) digits is 7200, while the sum is 28.

Adding to 213052520431 its reverse (134025250312), we get a palindrome (347077770743).

The spelling of 213052520431 in words is "two hundred thirteen billion, fifty-two million, five hundred twenty thousand, four hundred thirty-one".