31143243042344 has 8 divisors (see below), whose sum is σ = 58393580704410. Its totient is φ = 15571621521168.

The previous prime is 31143243042323. The next prime is 31143243042347. The reversal of 31143243042344 is 44324034234113.

It can be written as a sum of positive squares in only one way, i.e., 22931935012900 + 8211308029444 = 4788730^2 + 2865538^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 31143243042298 and 31143243042307.

It is not an unprimeable number, because it can be changed into a prime (31143243042347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1946452690139 + ... + 1946452690154.

Almost surely, 2^{31143243042344} is an apocalyptic number.

It is an amenable number.

31143243042344 is a deficient number, since it is larger than the sum of its proper divisors (27250337662066).

31143243042344 is a wasteful number, since it uses less digits than its factorization.

31143243042344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3892905380299 (or 3892905380295 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 38.

Adding to 31143243042344 its reverse (44324034234113), we get a palindrome (75467277276457).

The spelling of 31143243042344 in words is "thirty-one trillion, one hundred forty-three billion, two hundred forty-three million, forty-two thousand, three hundred forty-four".