211487113 has 2 divisors, whose sum is σ = 211487114. Its totient is φ = 211487112.

The previous prime is 211487083. The next prime is 211487117. The reversal of 211487113 is 311784112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 181926144 + 29560969 = 13488^2 + 5437^2 .

It is a cyclic number.

It is not a de Polignac number, because 211487113 - 2⁹ = 211486601 is a prime.

It is not a weakly prime, because it can be changed into another prime (211487117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105743556 + 105743557.

It is an arithmetic number, because the mean of its divisors is an integer number (105743557).

Almost surely, 2^211487113 is an apocalyptic number.

It is an amenable number.

211487113 is a deficient number, since it is larger than the sum of its proper divisors (1).

211487113 is an equidigital number, since it uses as much as digits as its factorization.

211487113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1344, while the sum is 28.

The square root of 211487113 is about 14542.5965013130. The cubic root of 211487113 is about 595.7919572140.

It can be divided in two parts, 211487 and 113, that added together give a square (211600 = 460²).

The spelling of 211487113 in words is "two hundred eleven million, four hundred eighty-seven thousand, one hundred thirteen".