211415340 has 24 divisors (see below), whose sum is σ = 591963120. Its totient is φ = 56377408.

The previous prime is 211415339. The next prime is 211415363. The reversal of 211415340 is 43514112.

211415340 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1761735 + ... + 1761854.

It is an arithmetic number, because the mean of its divisors is an integer number (24665130).

Almost surely, 2^211415340 is an apocalyptic number.

211415340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211415340 is an abundant number, since it is smaller than the sum of its proper divisors (380547780).

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

211415340 is a wasteful number, since it uses less digits than its factorization.

211415340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3523601 (or 3523599 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 211415340 is about 14540.1286101602. The cubic root of 211415340 is about 595.7245510352.

Adding to 211415340 its reverse (43514112), we get a palindrome (254929452).

The spelling of 211415340 in words is "two hundred eleven million, four hundred fifteen thousand, three hundred forty".