213545434 has 8 divisors (see below), whose sum is σ = 322358868. Its totient is φ = 106092480.

The previous prime is 213545419. The next prime is 213545447. The reversal of 213545434 is 434545312.

It can be written as a sum of positive squares in 2 ways, for example, as 211789809 + 1755625 = 14553^2 + 1325^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 213545396 and 213545405.

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, 339727 + ... + 340354.

Almost surely, 2^213545434 is an apocalyptic number.

213545434 is a deficient number, since it is larger than the sum of its proper divisors (108813434).

213545434 is a wasteful number, since it uses less digits than its factorization.

213545434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 680240.

The product of its digits is 28800, while the sum is 31.

The square root of 213545434 is about 14613.1938329716. The cubic root of 213545434 is about 597.7185899790.

The spelling of 213545434 in words is "two hundred thirteen million, five hundred forty-five thousand, four hundred thirty-four".