213532144 has 20 divisors (see below), whose sum is σ = 472821424. Its totient is φ = 91513728.

The previous prime is 213532103. The next prime is 213532153. The reversal of 213532144 is 441235312.

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, 953157 + ... + 953380.

Almost surely, 2^213532144 is an apocalyptic number.

It is an amenable number.

213532144 is an abundant number, since it is smaller than the sum of its proper divisors (259289280).

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

213532144 is a wasteful number, since it uses less digits than its factorization.

213532144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1906552 (or 1906546 counting only the distinct ones).

The product of its digits is 2880, while the sum is 25.

The square root of 213532144 is about 14612.7390998402. The cubic root of 213532144 is about 597.7061900497.

Adding to 213532144 its reverse (441235312), we get a palindrome (654767456).

The spelling of 213532144 in words is "two hundred thirteen million, five hundred thirty-two thousand, one hundred forty-four".