211031134 has 4 divisors (see below), whose sum is σ = 316546704. Its totient is φ = 105515566.

The previous prime is 211031123. The next prime is 211031137. The reversal of 211031134 is 431130112.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211031137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52757782 + ... + 52757785.

It is an arithmetic number, because the mean of its divisors is an integer number (79136676).

Almost surely, 2^211031134 is an apocalyptic number.

211031134 is a deficient number, since it is larger than the sum of its proper divisors (105515570).

211031134 is a wasteful number, since it uses less digits than its factorization.

211031134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105515569.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 211031134 is about 14526.9106832802. The cubic root of 211031134 is about 595.3634612868.

Adding to 211031134 its reverse (431130112), we get a palindrome (642161246).

The spelling of 211031134 in words is "two hundred eleven million, thirty-one thousand, one hundred thirty-four".