31100022230201 has 4 divisors (see below), whose sum is σ = 31118392002852. Its totient is φ = 31081652457552.

The previous prime is 31100022230197. The next prime is 31100022230203. The reversal of 31100022230201 is 10203222000113.

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 5569840722601 + 25530181507600 = 2360051^2 + 5052740^2 .

It is a cyclic number.

It is not a de Polignac number, because 31100022230201 - 2² = 31100022230197 is a prime.

It is a super-2 number, since 2×31100022230201² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31100022230201.

It is not an unprimeable number, because it can be changed into a prime (31100022230203) 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, 9184883786 + ... + 9184887171.

It is an arithmetic number, because the mean of its divisors is an integer number (7779598000713).

Almost surely, 2^{31100022230201} is an apocalyptic number.

It is an amenable number.

31100022230201 is a deficient number, since it is larger than the sum of its proper divisors (18369772651).

31100022230201 is a wasteful number, since it uses less digits than its factorization.

31100022230201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18369772650.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 31100022230201 its reverse (10203222000113), we get a palindrome (41303244230314).

The spelling of 31100022230201 in words is "thirty-one trillion, one hundred billion, twenty-two million, two hundred thirty thousand, two hundred one".