31111332430444 has 24 divisors (see below), whose sum is σ = 64229847600128. Its totient is φ = 12903317597520.

The previous prime is 31111332430393. The next prime is 31111332430489. The reversal of 31111332430444 is 44403423311113.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17921273574 + ... + 17921275309.

Almost surely, 2^{31111332430444} is an apocalyptic number.

It is an amenable number.

31111332430444 is an abundant number, since it is smaller than the sum of its proper divisors (33118515169684).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31111332430444 is a wasteful number, since it uses less digits than its factorization.

31111332430444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35842548925 (or 35842548923 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 34.

Adding to 31111332430444 its reverse (44403423311113), we get a palindrome (75514755741557).

The spelling of 31111332430444 in words is "thirty-one trillion, one hundred eleven billion, three hundred thirty-two million, four hundred thirty thousand, four hundred forty-four".