211401013 has 4 divisors (see below), whose sum is σ = 214556320. Its totient is φ = 208245708.

The previous prime is 211401007. The next prime is 211401023. The reversal of 211401013 is 310104112.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 211401013 - 2¹³ = 211392821 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211400984 and 211401002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211401023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1577553 + ... + 1577686.

It is an arithmetic number, because the mean of its divisors is an integer number (53639080).

Almost surely, 2^211401013 is an apocalyptic number.

It is an amenable number.

211401013 is a deficient number, since it is larger than the sum of its proper divisors (3155307).

211401013 is an equidigital number, since it uses as much as digits as its factorization.

211401013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3155306.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 211401013 is about 14539.6359307928. The cubic root of 211401013 is about 595.7110938937.

Adding to 211401013 its reverse (310104112), we get a palindrome (521505125).

The spelling of 211401013 in words is "two hundred eleven million, four hundred one thousand, thirteen".