213524145 has 24 divisors (see below), whose sum is σ = 371756736. Its totient is φ = 113372448.

The previous prime is 213524137. The next prime is 213524153. The reversal of 213524145 is 541425312.

It is an interprime number because it is at equal distance from previous prime (213524137) and next prime (213524153).

It is not a de Polignac number, because 213524145 - 2³ = 213524137 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 237 + ... + 20666.

It is an arithmetic number, because the mean of its divisors is an integer number (15489864).

Almost surely, 2^213524145 is an apocalyptic number.

It is an amenable number.

213524145 is a deficient number, since it is larger than the sum of its proper divisors (158232591).

213524145 is a wasteful number, since it uses less digits than its factorization.

213524145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21141 (or 21138 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 213524145 is about 14612.4653977349. The cubic root of 213524145 is about 597.6987265184.

Adding to 213524145 its reverse (541425312), we get a palindrome (754949457).

The spelling of 213524145 in words is "two hundred thirteen million, five hundred twenty-four thousand, one hundred forty-five".