31444533544413 has 48 divisors (see below), whose sum is σ = 48810280131648. Its totient is φ = 17930594035200.

The previous prime is 31444533544399. The next prime is 31444533544429.

31444533544413 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 31444533544413 - 2³² = 31440238577117 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31444533544913) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 18713383 + ... + 20324363.

It is an arithmetic number, because the mean of its divisors is an integer number (1016880836076).

Almost surely, 2^{31444533544413} is an apocalyptic number.

31444533544413 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

It is an amenable number.

31444533544413 is a deficient number, since it is larger than the sum of its proper divisors (17365746587235).

31444533544413 is a wasteful number, since it uses less digits than its factorization.

31444533544413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1614186 (or 1614175 counting only the distinct ones).

The product of its digits is 8294400, while the sum is 48.

It can be divided in two parts, 3144453 and 3544413, that added together give a palindrome (6688866).

The spelling of 31444533544413 in words is "thirty-one trillion, four hundred forty-four billion, five hundred thirty-three million, five hundred forty-four thousand, four hundred thirteen".