31121110020001 has 8 divisors (see below), whose sum is σ = 31985421979520. Its totient is φ = 30268557407088.

The previous prime is 31121110019957. The next prime is 31121110020029. The reversal of 31121110020001 is 10002001112113.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 31121110020001 - 2²⁵ = 31121076465569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31121110020061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2939831286 + ... + 2939841871.

It is an arithmetic number, because the mean of its divisors is an integer number (3998177747440).

Almost surely, 2^{31121110020001} is an apocalyptic number.

It is an amenable number.

31121110020001 is a deficient number, since it is larger than the sum of its proper divisors (864311959519).

31121110020001 is an equidigital number, since it uses as much as digits as its factorization.

31121110020001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5879673303.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 31121110020001 its reverse (10002001112113), we get a palindrome (41123111132114).

The spelling of 31121110020001 in words is "thirty-one trillion, one hundred twenty-one billion, one hundred ten million, twenty thousand, one".