212043440043031 has 4 divisors (see below), whose sum is σ = 224516583574992. Its totient is φ = 199570296511072.

The previous prime is 212043440043007. The next prime is 212043440043047. The reversal of 212043440043031 is 130340044340212.

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 212043440043031 - 2²³ = 212043431654423 is a prime.

It is a super-2 number, since 2×212043440043031² (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 = 212043440042984 and 212043440043002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212043440043091) 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, 6236571765955 + ... + 6236571765988.

It is an arithmetic number, because the mean of its divisors is an integer number (56129145893748).

Almost surely, 2^{212043440043031} is an apocalyptic number.

212043440043031 is a deficient number, since it is larger than the sum of its proper divisors (12473143531961).

212043440043031 is a wasteful number, since it uses less digits than its factorization.

212043440043031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12473143531960.

The product of its (nonzero) digits is 27648, while the sum is 31.

Adding to 212043440043031 its reverse (130340044340212), we get a palindrome (342383484383243).

The spelling of 212043440043031 in words is "two hundred twelve trillion, forty-three billion, four hundred forty million, forty-three thousand, thirty-one".