31444413401 has 8 divisors (see below), whose sum is σ = 32223582144. Its totient is φ = 30674358000.

The previous prime is 31444413391. The next prime is 31444413419. The reversal of 31444413401 is 10431444413.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31444413401 is a prime.

It is a super-2 number, since 2×31444413401² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31444403401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2271350 + ... + 2285151.

It is an arithmetic number, because the mean of its divisors is an integer number (4027947768).

Almost surely, 2^31444413401 is an apocalyptic number.

It is an amenable number.

31444413401 is a deficient number, since it is larger than the sum of its proper divisors (779168743).

31444413401 is a wasteful number, since it uses less digits than its factorization.

31444413401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4556671.

The product of its (nonzero) digits is 9216, while the sum is 29.

Adding to 31444413401 its reverse (10431444413), we get a palindrome (41875857814).

The spelling of 31444413401 in words is "thirty-one billion, four hundred forty-four million, four hundred thirteen thousand, four hundred one".