213540532 has 12 divisors (see below), whose sum is σ = 375575200. Its totient is φ = 106233336.

The previous prime is 213540521. The next prime is 213540541. The reversal of 213540532 is 235045312.

It is a junction number, because it is equal to n+sod(n) for n = 213540497 and 213540506.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133338 + ... + 134929.

Almost surely, 2^213540532 is an apocalyptic number.

It is an amenable number.

213540532 is a deficient number, since it is larger than the sum of its proper divisors (162034668).

213540532 is a wasteful number, since it uses less digits than its factorization.

213540532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268470 (or 268468 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 213540532 is about 14613.0261068678. The cubic root of 213540532 is about 597.7140163404.

Adding to 213540532 its reverse (235045312), we get a palindrome (448585844).

The spelling of 213540532 in words is "two hundred thirteen million, five hundred forty thousand, five hundred thirty-two".