31013222211101 has 8 divisors (see below), whose sum is σ = 33412559628504. Its totient is φ = 28615842642240.

The previous prime is 31013222211053. The next prime is 31013222211119. The reversal of 31013222211101 is 10111222231013.

It can be written as a sum of positive squares in 4 ways, for example, as 11227183788601 + 19786038422500 = 3350699^2 + 4448150^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31013222211101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31013222211121) 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, 489429230 + ... + 489492591.

It is an arithmetic number, because the mean of its divisors is an integer number (4176569953563).

Almost surely, 2^{31013222211101} is an apocalyptic number.

It is an amenable number.

31013222211101 is a deficient number, since it is larger than the sum of its proper divisors (2399337417403).

31013222211101 is a wasteful number, since it uses less digits than its factorization.

31013222211101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 978924271.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 31013222211101 its reverse (10111222231013), we get a palindrome (41124444442114).

The spelling of 31013222211101 in words is "thirty-one trillion, thirteen billion, two hundred twenty-two million, two hundred eleven thousand, one hundred one".