212111232031 has 8 divisors (see below), whose sum is σ = 212513228928. Its totient is φ = 211709343000.

The previous prime is 212111232019. The next prime is 212111232043. The reversal of 212111232031 is 130232111212.

It is an interprime number because it is at equal distance from previous prime (212111232019) and next prime (212111232043).

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

It is a cyclic number.

It is not a de Polignac number, because 212111232031 - 2⁵ = 212111231999 is a prime.

It is a super-2 number, since 2×212111232031² (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 (212111232071) 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 7 ways as a sum of consecutive naturals, for example, 4677336 + ... + 4722466.

It is an arithmetic number, because the mean of its divisors is an integer number (26564153616).

Almost surely, 2^212111232031 is an apocalyptic number.

212111232031 is a deficient number, since it is larger than the sum of its proper divisors (401996897).

212111232031 is an equidigital number, since it uses as much as digits as its factorization.

212111232031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53933.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 212111232031 its reverse (130232111212), we get a palindrome (342343343243).

The spelling of 212111232031 in words is "two hundred twelve billion, one hundred eleven million, two hundred thirty-two thousand, thirty-one".