31123422020443 has 8 divisors (see below), whose sum is σ = 31136883095808. Its totient is φ = 31109963240424.

The previous prime is 31123422020441. The next prime is 31123422020447. The reversal of 31123422020443 is 34402022432113.

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 31123422020443 - 2¹ = 31123422020441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31123422020441) 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 7 ways as a sum of consecutive naturals, for example, 26833146 + ... + 27968992.

It is an arithmetic number, because the mean of its divisors is an integer number (3892110386976).

Almost surely, 2^{31123422020443} is an apocalyptic number.

31123422020443 is a deficient number, since it is larger than the sum of its proper divisors (13461075365).

31123422020443 is a wasteful number, since it uses less digits than its factorization.

31123422020443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1147673.

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

Adding to 31123422020443 its reverse (34402022432113), we get a palindrome (65525444452556).

The spelling of 31123422020443 in words is "thirty-one trillion, one hundred twenty-three billion, four hundred twenty-two million, twenty thousand, four hundred forty-three".