31444230043021 has 8 divisors (see below), whose sum is σ = 31768413906944. Its totient is φ = 31121647087680.

The previous prime is 31444230042943. The next prime is 31444230043033. The reversal of 31444230043021 is 12034003244413.

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 31444230043021 - 2⁷ = 31444230042893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31444230043091) 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, 400187661 + ... + 400266226.

It is an arithmetic number, because the mean of its divisors is an integer number (3971051738368).

Almost surely, 2^{31444230043021} is an apocalyptic number.

It is an amenable number.

31444230043021 is a deficient number, since it is larger than the sum of its proper divisors (324183863923).

31444230043021 is a wasteful number, since it uses less digits than its factorization.

31444230043021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 800454291.

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

Adding to 31444230043021 its reverse (12034003244413), we get a palindrome (43478233287434).

The spelling of 31444230043021 in words is "thirty-one trillion, four hundred forty-four billion, two hundred thirty million, forty-three thousand, twenty-one".