31142444202344 has 8 divisors (see below), whose sum is σ = 58392082879410. Its totient is φ = 15571222101168.

The previous prime is 31142444202343. The next prime is 31142444202377. The reversal of 31142444202344 is 44320244424113.

It can be written as a sum of positive squares in only one way, i.e., 18096839305444 + 13045604896900 = 4254038^2 + 3611870^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×31142444202344² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31142444202298 and 31142444202307.

It is not an unprimeable number, because it can be changed into a prime (31142444202341) by changing a digit.

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 as a sum of consecutive naturals, namely, 1946402762639 + ... + 1946402762654.

Almost surely, 2^{31142444202344} is an apocalyptic number.

It is an amenable number.

31142444202344 is a deficient number, since it is larger than the sum of its proper divisors (27249638677066).

31142444202344 is a wasteful number, since it uses less digits than its factorization.

31142444202344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3892805525299 (or 3892805525295 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 38.

Adding to 31142444202344 its reverse (44320244424113), we get a palindrome (75462688626457).

The spelling of 31142444202344 in words is "thirty-one trillion, one hundred forty-two billion, four hundred forty-four million, two hundred two thousand, three hundred forty-four".