213657513 has 8 divisors (see below), whose sum is σ = 301634208. Its totient is φ = 134059584.

The previous prime is 213657473. The next prime is 213657517. The reversal of 213657513 is 315756312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 213657513 - 2⁶ = 213657449 is a prime.

It is a super-2 number, since 2×213657513² = 91299065722690338, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (213657517) 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, 2094631 + ... + 2094732.

It is an arithmetic number, because the mean of its divisors is an integer number (37704276).

Almost surely, 2^213657513 is an apocalyptic number.

It is an amenable number.

213657513 is a deficient number, since it is larger than the sum of its proper divisors (87976695).

213657513 is a wasteful number, since it uses less digits than its factorization.

213657513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4189383.

The product of its digits is 18900, while the sum is 33.

The square root of 213657513 is about 14617.0281863312. The cubic root of 213657513 is about 597.8231422576.

The spelling of 213657513 in words is "two hundred thirteen million, six hundred fifty-seven thousand, five hundred thirteen".