211631014 has 32 divisors (see below), whose sum is σ = 371589120. Its totient is φ = 88519392.

The previous prime is 211630973. The next prime is 211631029. The reversal of 211631014 is 410136112.

It is a junction number, because it is equal to n+sod(n) for n = 211630982 and 211631000.

It is a congruent number.

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, 164827 + ... + 166105.

It is an arithmetic number, because the mean of its divisors is an integer number (11612160).

Almost surely, 2^211631014 is an apocalyptic number.

211631014 is a deficient number, since it is larger than the sum of its proper divisors (159958106).

211631014 is a wasteful number, since it uses less digits than its factorization.

211631014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1564.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 211631014 is about 14547.5432290129. The cubic root of 211631014 is about 595.9270570461.

Adding to 211631014 its reverse (410136112), we get a palindrome (621767126).

The spelling of 211631014 in words is "two hundred eleven million, six hundred thirty-one thousand, fourteen".