211401031 has 8 divisors (see below), whose sum is σ = 213665760. Its totient is φ = 209142432.

The previous prime is 211401023. The next prime is 211401037. The reversal of 211401031 is 130104112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 211401031 - 2³ = 211401023 is a prime.

It is a super-2 number, since 2×211401031² = 89380791815725922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211401037) 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, 106161 + ... + 108133.

It is an arithmetic number, because the mean of its divisors is an integer number (26708220).

Almost surely, 2^211401031 is an apocalyptic number.

211401031 is a deficient number, since it is larger than the sum of its proper divisors (2264729).

211401031 is a wasteful number, since it uses less digits than its factorization.

211401031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3065.

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

The square root of 211401031 is about 14539.6365497904. The cubic root of 211401031 is about 595.7111108012.

Adding to 211401031 its reverse (130104112), we get a palindrome (341505143).

The spelling of 211401031 in words is "two hundred eleven million, four hundred one thousand, thirty-one".