31444147641 has 16 divisors (see below), whose sum is σ = 44166267200. Its totient is φ = 19844103168.

The previous prime is 31444147639. The next prime is 31444147643. The reversal of 31444147641 is 14674144413.

It is an interprime number because it is at equal distance from previous prime (31444147639) and next prime (31444147643).

It is not a de Polignac number, because 31444147641 - 2¹ = 31444147639 is a prime.

It is a super-3 number, since 3×31444147641³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31444147641.

It is not an unprimeable number, because it can be changed into a prime (31444147643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 138736 + ... + 286593.

It is an arithmetic number, because the mean of its divisors is an integer number (2760391700).

Almost surely, 2^31444147641 is an apocalyptic number.

It is an amenable number.

31444147641 is a deficient number, since it is larger than the sum of its proper divisors (12722119559).

31444147641 is a wasteful number, since it uses less digits than its factorization.

31444147641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426648.

The product of its digits is 129024, while the sum is 39.

The spelling of 31444147641 in words is "thirty-one billion, four hundred forty-four million, one hundred forty-seven thousand, six hundred forty-one".