10440031321987 has 4 divisors (see below), whose sum is σ = 10463812714960. Its totient is φ = 10416249929016.

The previous prime is 10440031321963. The next prime is 10440031321997. The reversal of 10440031321987 is 78912313004401.

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 10440031321987 - 2⁴³ = 1643938299779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10440031321997) 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, 11890695828 + ... + 11890696705.

It is an arithmetic number, because the mean of its divisors is an integer number (2615953178740).

Almost surely, 2^{10440031321987} is an apocalyptic number.

10440031321987 is a deficient number, since it is larger than the sum of its proper divisors (23781392973).

10440031321987 is an equidigital number, since it uses as much as digits as its factorization.

10440031321987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23781392972.

The product of its (nonzero) digits is 145152, while the sum is 43.

The spelling of 10440031321987 in words is "ten trillion, four hundred forty billion, thirty-one million, three hundred twenty-one thousand, nine hundred eighty-seven".