31031022121001 has 8 divisors (see below), whose sum is σ = 37330552927680. Its totient is φ = 25198123225968.

The previous prime is 31031022120983. The next prime is 31031022121003. The reversal of 31031022121001 is 10012122013013.

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

It is not a de Polignac number, because 31031022121001 - 2⁶ = 31031022120937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31031022121003) 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, 116657977766 + ... + 116657978031.

It is an arithmetic number, because the mean of its divisors is an integer number (4666319115960).

Almost surely, 2^{31031022121001} is an apocalyptic number.

It is an amenable number.

31031022121001 is a deficient number, since it is larger than the sum of its proper divisors (6299530806679).

31031022121001 is a wasteful number, since it uses less digits than its factorization.

31031022121001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233315955823.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 31031022121001 its reverse (10012122013013), we get a palindrome (41043144134014).

The spelling of 31031022121001 in words is "thirty-one trillion, thirty-one billion, twenty-two million, one hundred twenty-one thousand, one".