211302102031 has 4 divisors (see below), whose sum is σ = 211413257064. Its totient is φ = 211190947000.

The previous prime is 211302102029. The next prime is 211302102041. The reversal of 211302102031 is 130201203112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 211302102031 - 2¹ = 211302102029 is a prime.

It is a super-2 number, since 2×211302102031² (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 = 211302101996 and 211302102014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211302102041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55574665 + ... + 55578466.

It is an arithmetic number, because the mean of its divisors is an integer number (52853314266).

Almost surely, 2^211302102031 is an apocalyptic number.

211302102031 is a deficient number, since it is larger than the sum of its proper divisors (111155033).

211302102031 is a wasteful number, since it uses less digits than its factorization.

211302102031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111155032.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 211302102031 its reverse (130201203112), we get a palindrome (341503305143).

The spelling of 211302102031 in words is "two hundred eleven billion, three hundred two million, one hundred two thousand, thirty-one".