213459016 has 8 divisors (see below), whose sum is σ = 400235670. Its totient is φ = 106729504.

The previous prime is 213459011. The next prime is 213459017. The reversal of 213459016 is 610954312.

It can be written as a sum of positive squares in only one way, i.e., 131194116 + 82264900 = 11454^2 + 9070^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (213459011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13341181 + ... + 13341196.

Almost surely, 2^213459016 is an apocalyptic number.

213459016 is the 7810-th centered heptagonal number.

It is an amenable number.

213459016 is a deficient number, since it is larger than the sum of its proper divisors (186776654).

213459016 is a wasteful number, since it uses less digits than its factorization.

213459016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26682383 (or 26682379 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 213459016 is about 14610.2366852834. The cubic root of 213459016 is about 597.6379504425.

The spelling of 213459016 in words is "two hundred thirteen million, four hundred fifty-nine thousand, sixteen".