31343304146 has 32 divisors (see below), whose sum is σ = 58678611840. Its totient is φ = 12198643200.

The previous prime is 31343304143. The next prime is 31343304151. The reversal of 31343304146 is 64140334313.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (31343304143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36770 + ... + 253058.

It is an arithmetic number, because the mean of its divisors is an integer number (1833706620).

Almost surely, 2^31343304146 is an apocalyptic number.

31343304146 is a deficient number, since it is larger than the sum of its proper divisors (27335307694).

31343304146 is a wasteful number, since it uses less digits than its factorization.

31343304146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217250.

The product of its (nonzero) digits is 31104, while the sum is 32.

Adding to 31343304146 its reverse (64140334313), we get a palindrome (95483638459).

The spelling of 31343304146 in words is "thirty-one billion, three hundred forty-three million, three hundred four thousand, one hundred forty-six".