211431431110 has 32 divisors (see below), whose sum is σ = 382647035232. Its totient is φ = 84113671680.

The previous prime is 211431431069. The next prime is 211431431117. The reversal of 211431431110 is 11134134112.

It is a super-2 number, since 2×211431431110² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211431431117) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1340574 + ... + 1489966.

It is an arithmetic number, because the mean of its divisors is an integer number (11957719851).

Almost surely, 2^211431431110 is an apocalyptic number.

211431431110 is a deficient number, since it is larger than the sum of its proper divisors (171215604122).

211431431110 is a wasteful number, since it uses less digits than its factorization.

211431431110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150168.

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 211431431110 its reverse (11134134112), we get a palindrome (222565565222).

The spelling of 211431431110 in words is "two hundred eleven billion, four hundred thirty-one million, four hundred thirty-one thousand, one hundred ten".