31444451330051 has 4 divisors (see below), whose sum is σ = 31445400801600. Its totient is φ = 31443501858504.

The previous prime is 31444451330003. The next prime is 31444451330053. The reversal of 31444451330051 is 15003315444413.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31444451330051 is a prime.

It is a super-2 number, since 2×31444451330051² (a number of 28 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 = 31444451329987 and 31444451330014.

It is not an unprimeable number, because it can be changed into a prime (31444451330053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 474686096 + ... + 474752333.

It is an arithmetic number, because the mean of its divisors is an integer number (7861350200400).

Almost surely, 2^{31444451330051} is an apocalyptic number.

31444451330051 is a deficient number, since it is larger than the sum of its proper divisors (949471549).

31444451330051 is an equidigital number, since it uses as much as digits as its factorization.

31444451330051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 949471548.

The product of its (nonzero) digits is 172800, while the sum is 38.

Adding to 31444451330051 its reverse (15003315444413), we get a palindrome (46447766774464).

The spelling of 31444451330051 in words is "thirty-one trillion, four hundred forty-four billion, four hundred fifty-one million, three hundred thirty thousand, fifty-one".