210306136434 has 32 divisors (see below), whose sum is σ = 445401421056. Its totient is φ = 65971395840.

The previous prime is 210306136429. The next prime is 210306136517. The reversal of 210306136434 is 434631603012.

It is a junction number, because it is equal to n+sod(n) for n = 210306136395 and 210306136404.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 902404 + ... + 1111280.

It is an arithmetic number, because the mean of its divisors is an integer number (13918794408).

Almost surely, 2^210306136434 is an apocalyptic number.

210306136434 is an abundant number, since it is smaller than the sum of its proper divisors (235095284622).

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

210306136434 is a wasteful number, since it uses less digits than its factorization.

210306136434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218770.

The product of its (nonzero) digits is 31104, while the sum is 33.

Adding to 210306136434 its reverse (434631603012), we get a palindrome (644937739446).

The spelling of 210306136434 in words is "two hundred ten billion, three hundred six million, one hundred thirty-six thousand, four hundred thirty-four".