213215346534 has 64 divisors (see below), whose sum is σ = 448126608384. Its totient is φ = 67500529536.

The previous prime is 213215346527. The next prime is 213215346559. The reversal of 213215346534 is 435643512312.

It is a super-2 number, since 2×213215346534² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 213215346492 and 213215346501.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23341032 + ... + 23350164.

It is an arithmetic number, because the mean of its divisors is an integer number (7001978256).

Almost surely, 2^213215346534 is an apocalyptic number.

213215346534 is an abundant number, since it is smaller than the sum of its proper divisors (234911261850).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213215346534 is a wasteful number, since it uses less digits than its factorization.

213215346534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10341.

The product of its digits is 259200, while the sum is 39.

Adding to 213215346534 its reverse (435643512312), we get a palindrome (648858858846).

The spelling of 213215346534 in words is "two hundred thirteen billion, two hundred fifteen million, three hundred forty-six thousand, five hundred thirty-four".