211471953 has 32 divisors (see below), whose sum is σ = 353452032. Its totient is φ = 109257600.

The previous prime is 211471951. The next prime is 211471969. The reversal of 211471953 is 359174112.

211471953 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 211471953 - 2¹ = 211471951 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (211471951) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 41725 + ... + 46517.

It is an arithmetic number, because the mean of its divisors is an integer number (11045376).

Almost surely, 2^211471953 is an apocalyptic number.

It is an amenable number.

211471953 is a deficient number, since it is larger than the sum of its proper divisors (141980079).

211471953 is a wasteful number, since it uses less digits than its factorization.

211471953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5005.

The product of its digits is 7560, while the sum is 33.

The square root of 211471953 is about 14542.0752645556. The cubic root of 211471953 is about 595.7777208510. Note that the first 4 decimals are identical.

The spelling of 211471953 in words is "two hundred eleven million, four hundred seventy-one thousand, nine hundred fifty-three".