212103020231 has 4 divisors (see below), whose sum is σ = 212108526864. Its totient is φ = 212097513600.

The previous prime is 212103020197. The next prime is 212103020291. The reversal of 212103020231 is 132020301212.

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 212103020231 - 2¹⁰ = 212103019207 is a prime.

It is a super-2 number, since 2×212103020231² (a number of 23 digits) 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 (212103020291) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2695130 + ... + 2772711.

It is an arithmetic number, because the mean of its divisors is an integer number (53027131716).

Almost surely, 2^212103020231 is an apocalyptic number.

212103020231 is a deficient number, since it is larger than the sum of its proper divisors (5506633).

212103020231 is an equidigital number, since it uses as much as digits as its factorization.

212103020231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5506632.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 212103020231 its reverse (132020301212), we get a palindrome (344123321443).

The spelling of 212103020231 in words is "two hundred twelve billion, one hundred three million, twenty thousand, two hundred thirty-one".