211102970231 has 2 divisors, whose sum is σ = 211102970232. Its totient is φ = 211102970230.

The previous prime is 211102970213. The next prime is 211102970233. The reversal of 211102970231 is 132079201112.

Together with previous prime (211102970213) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 211102970231 - 2⁶ = 211102970167 is a prime.

It is a super-2 number, since 2×211102970231² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

Together with 211102970233, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 211102970194 and 211102970203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211102970233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105551485115 + 105551485116.

It is an arithmetic number, because the mean of its divisors is an integer number (105551485116).

Almost surely, 2^211102970231 is an apocalyptic number.

211102970231 is a deficient number, since it is larger than the sum of its proper divisors (1).

211102970231 is an equidigital number, since it uses as much as digits as its factorization.

211102970231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 29.

The spelling of 211102970231 in words is "two hundred eleven billion, one hundred two million, nine hundred seventy thousand, two hundred thirty-one".