212232120031031 has 4 divisors (see below), whose sum is σ = 216236499654312. Its totient is φ = 208227740407752.

The previous prime is 212232120031027. The next prime is 212232120031033. The reversal of 212232120031031 is 130130021232212.

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 212232120031031 - 2² = 212232120031027 is a prime.

It is a super-2 number, since 2×212232120031031² (a number of 29 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 = 212232120030988 and 212232120031006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212232120031033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2002189811561 + ... + 2002189811666.

It is an arithmetic number, because the mean of its divisors is an integer number (54059124913578).

Almost surely, 2^{212232120031031} is an apocalyptic number.

212232120031031 is a deficient number, since it is larger than the sum of its proper divisors (4004379623281).

212232120031031 is an equidigital number, since it uses as much as digits as its factorization.

212232120031031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4004379623280.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 212232120031031 its reverse (130130021232212), we get a palindrome (342362141263243).

The spelling of 212232120031031 in words is "two hundred twelve trillion, two hundred thirty-two billion, one hundred twenty million, thirty-one thousand, thirty-one".