212320333031 has 24 divisors (see below), whose sum is σ = 221449231872. Its totient is φ = 203548690800.

The previous prime is 212320333019. The next prime is 212320333039. The reversal of 212320333031 is 130333023212.

It is a de Polignac number, because none of the positive numbers 2^k-212320333031 is a prime.

It is a super-2 number, since 2×212320333031² (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 = 212320332988 and 212320333006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212320333039) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 99075146 + ... + 99077288.

It is an arithmetic number, because the mean of its divisors is an integer number (9227051328).

Almost surely, 2^212320333031 is an apocalyptic number.

212320333031 is a deficient number, since it is larger than the sum of its proper divisors (9128898841).

212320333031 is a wasteful number, since it uses less digits than its factorization.

212320333031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3123 (or 3092 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 212320333031 its reverse (130333023212), we get a palindrome (342653356243).

The spelling of 212320333031 in words is "two hundred twelve billion, three hundred twenty million, three hundred thirty-three thousand, thirty-one".