31333140345 has 64 divisors (see below), whose sum is σ = 54730287360. Its totient is φ = 15214497792.

The previous prime is 31333140341. The next prime is 31333140361. The reversal of 31333140345 is 54304133313.

It is not a de Polignac number, because 31333140345 - 2² = 31333140341 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31333140341) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 13092469 + ... + 13094861.

It is an arithmetic number, because the mean of its divisors is an integer number (855160740).

Almost surely, 2^31333140345 is an apocalyptic number.

It is an amenable number.

31333140345 is a deficient number, since it is larger than the sum of its proper divisors (23397147015).

31333140345 is a wasteful number, since it uses less digits than its factorization.

31333140345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3306.

The product of its (nonzero) digits is 19440, while the sum is 30.

Adding to 31333140345 its reverse (54304133313), we get a palindrome (85637273658).

The spelling of 31333140345 in words is "thirty-one billion, three hundred thirty-three million, one hundred forty thousand, three hundred forty-five".