31343144042 has 16 divisors (see below), whose sum is σ = 53763376320. Its totient is φ = 13424707968.

The previous prime is 31343144029. The next prime is 31343144071. The reversal of 31343144042 is 24044134313.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 31343143996 and 31343144014.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 648167 + ... + 694842.

It is an arithmetic number, because the mean of its divisors is an integer number (3360211020).

Almost surely, 2^31343144042 is an apocalyptic number.

31343144042 is a deficient number, since it is larger than the sum of its proper divisors (22420232278).

31343144042 is a wasteful number, since it uses less digits than its factorization.

31343144042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1344685.

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 31343144042 its reverse (24044134313), we get a palindrome (55387278355).

The spelling of 31343144042 in words is "thirty-one billion, three hundred forty-three million, one hundred forty-four thousand, forty-two".