210131434 has 4 divisors (see below), whose sum is σ = 315197154. Its totient is φ = 105065716.

The previous prime is 210131417. The next prime is 210131459. The reversal of 210131434 is 434131012.

210131434 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 108222409 + 101909025 = 10403^2 + 10095^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52532857 + ... + 52532860.

Almost surely, 2^210131434 is an apocalyptic number.

210131434 is a deficient number, since it is larger than the sum of its proper divisors (105065720).

210131434 is a wasteful number, since it uses less digits than its factorization.

210131434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105065719.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 210131434 is about 14495.9109406756. The cubic root of 210131434 is about 594.5161747223.

Adding to 210131434 its reverse (434131012), we get a palindrome (644262446).

The spelling of 210131434 in words is "two hundred ten million, one hundred thirty-one thousand, four hundred thirty-four".