211123010031 has 8 divisors (see below), whose sum is σ = 281878266240. Its totient is φ = 140558213592.

The previous prime is 211123010027. The next prime is 211123010057. The reversal of 211123010031 is 130010321112.

It is a happy number.

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

It is not a de Polignac number, because 211123010031 - 2² = 211123010027 is a prime.

It is a super-2 number, since 2×211123010031² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211123010531) 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, 47612355 + ... + 47616788.

It is an arithmetic number, because the mean of its divisors is an integer number (35234783280).

Almost surely, 2^211123010031 is an apocalyptic number.

211123010031 is a deficient number, since it is larger than the sum of its proper divisors (70755256209).

211123010031 is an equidigital number, since it uses as much as digits as its factorization.

211123010031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95229885.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 211123010031 its reverse (130010321112), we get a palindrome (341133331143).

The spelling of 211123010031 in words is "two hundred eleven billion, one hundred twenty-three million, ten thousand, thirty-one".