31445445443042 has 8 divisors (see below), whose sum is σ = 48442983520476. Its totient is φ = 15297784269552.

The previous prime is 31445445443039. The next prime is 31445445443089. The reversal of 31445445443042 is 24034454454413.

It can be written as a sum of positive squares in 2 ways, for example, as 25837590458761 + 5607854984281 = 5083069^2 + 2368091^2 .

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

It is a super-2 number, since 2×31445445443042² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 212469225893 + ... + 212469226040.

Almost surely, 2^{31445445443042} is an apocalyptic number.

31445445443042 is a deficient number, since it is larger than the sum of its proper divisors (16997538077434).

31445445443042 is a wasteful number, since it uses less digits than its factorization.

31445445443042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424938451972.

The product of its (nonzero) digits is 7372800, while the sum is 47.

Adding to 31445445443042 its reverse (24034454454413), we get a palindrome (55479899897455).

The spelling of 31445445443042 in words is "thirty-one trillion, four hundred forty-five billion, four hundred forty-five million, four hundred forty-three thousand, forty-two".