31205541140011 has 8 divisors (see below), whose sum is σ = 36893250609120. Its totient is φ = 25825275426048.

The previous prime is 31205541140009. The next prime is 31205541140117. The reversal of 31205541140011 is 11004114550213.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 31205541140011 - 2¹ = 31205541140009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31205541140911) 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 in 7 ways as a sum of consecutive naturals, for example, 76860938566 + ... + 76860938971.

It is an arithmetic number, because the mean of its divisors is an integer number (4611656326140).

Almost surely, 2^{31205541140011} is an apocalyptic number.

31205541140011 is a deficient number, since it is larger than the sum of its proper divisors (5687709469109).

31205541140011 is a wasteful number, since it uses less digits than its factorization.

31205541140011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153721877573.

The product of its (nonzero) digits is 2400, while the sum is 28.

Adding to 31205541140011 its reverse (11004114550213), we get a palindrome (42209655690224).

The spelling of 31205541140011 in words is "thirty-one trillion, two hundred five billion, five hundred forty-one million, one hundred forty thousand, eleven".