211713612 has 24 divisors (see below), whose sum is σ = 538907712. Its totient is φ = 64155600.

The previous prime is 211713611. The next prime is 211713613. The reversal of 211713612 is 216317112.

It is an interprime number because it is at equal distance from previous prime (211713611) and next prime (211713613).

It is not an unprimeable number, because it can be changed into a prime (211713611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 801814 + ... + 802077.

It is an arithmetic number, because the mean of its divisors is an integer number (22454488).

Almost surely, 2^211713612 is an apocalyptic number.

211713612 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

211713612 is an abundant number, since it is smaller than the sum of its proper divisors (327194100).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211713612 is a wasteful number, since it uses less digits than its factorization.

211713612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1603909 (or 1603907 counting only the distinct ones).

The product of its digits is 504, while the sum is 24.

The square root of 211713612 is about 14550.3818506595. The cubic root of 211713612 is about 596.0045755846.

The spelling of 211713612 in words is "two hundred eleven million, seven hundred thirteen thousand, six hundred twelve".