210831217034 has 4 divisors (see below), whose sum is σ = 316246825554. Its totient is φ = 105415608516.

The previous prime is 210831216989. The next prime is 210831217063. The reversal of 210831217034 is 430712138012.

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., 138767425225 + 72063791809 = 372515^2 + 268447^2 .

It is a super-2 number, since 2×210831217034² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52707804257 + ... + 52707804260.

Almost surely, 2^210831217034 is an apocalyptic number.

210831217034 is a deficient number, since it is larger than the sum of its proper divisors (105415608520).

210831217034 is a wasteful number, since it uses less digits than its factorization.

210831217034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105415608519.

The product of its (nonzero) digits is 8064, while the sum is 32.

The spelling of 210831217034 in words is "two hundred ten billion, eight hundred thirty-one million, two hundred seventeen thousand, thirty-four".