213534501511 has 8 divisors (see below), whose sum is σ = 214030371600. Its totient is φ = 213039055680.

The previous prime is 213534501473. The next prime is 213534501541. The reversal of 213534501511 is 115105435312.

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 213534501511 - 2²⁷ = 213400283783 is a prime.

It is a super-2 number, since 2×213534501511² (a number of 23 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 (213534501541) 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, 913056 + ... + 1122826.

It is an arithmetic number, because the mean of its divisors is an integer number (26753796450).

Almost surely, 2^213534501511 is an apocalyptic number.

213534501511 is a deficient number, since it is larger than the sum of its proper divisors (495870089).

213534501511 is a wasteful number, since it uses less digits than its factorization.

213534501511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212129.

The product of its (nonzero) digits is 9000, while the sum is 31.

Adding to 213534501511 its reverse (115105435312), we get a palindrome (328639936823).

The spelling of 213534501511 in words is "two hundred thirteen billion, five hundred thirty-four million, five hundred one thousand, five hundred eleven".