31552050121001 has 4 divisors (see below), whose sum is σ = 31552077958404. Its totient is φ = 31552022283600.

The previous prime is 31552050120977. The next prime is 31552050121061. The reversal of 31552050121001 is 10012105025513.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16464077184025 + 15087972936976 = 4057595^2 + 3884324^2 .

It is a cyclic number.

It is not a de Polignac number, because 31552050121001 - 2⁶ = 31552050120937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31552050121061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12143030 + ... + 14510591.

It is an arithmetic number, because the mean of its divisors is an integer number (7888019489601).

Almost surely, 2^{31552050121001} is an apocalyptic number.

It is an amenable number.

31552050121001 is a deficient number, since it is larger than the sum of its proper divisors (27837403).

31552050121001 is a wasteful number, since it uses less digits than its factorization.

31552050121001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27837402.

The product of its (nonzero) digits is 1500, while the sum is 26.

Adding to 31552050121001 its reverse (10012105025513), we get a palindrome (41564155146514).

The spelling of 31552050121001 in words is "thirty-one trillion, five hundred fifty-two billion, fifty million, one hundred twenty-one thousand, one".