211300030031 has 16 divisors (see below), whose sum is σ = 221371895808. Its totient is φ = 201436435200.

The previous prime is 211300029893. The next prime is 211300030037. The reversal of 211300030031 is 130030003112.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211300030031 is a prime.

It is a super-2 number, since 2×211300030031² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211300029988 and 211300030015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211300030037) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2652575 + ... + 2731071.

It is an arithmetic number, because the mean of its divisors is an integer number (13835743488).

Almost surely, 2^211300030031 is an apocalyptic number.

211300030031 is a deficient number, since it is larger than the sum of its proper divisors (10071865777).

211300030031 is a wasteful number, since it uses less digits than its factorization.

211300030031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79822.

The product of its (nonzero) digits is 54, while the sum is 14.

Adding to 211300030031 its reverse (130030003112), we get a palindrome (341330033143).

The spelling of 211300030031 in words is "two hundred eleven billion, three hundred million, thirty thousand, thirty-one".