31100122201 has 8 divisors (see below), whose sum is σ = 32937730920. Its totient is φ = 29263423488.

The previous prime is 31100122199. The next prime is 31100122211. The reversal of 31100122201 is 10222100113.

It can be written as a sum of positive squares in 4 ways, for example, as 13437446400 + 17662675801 = 115920^2 + 132901^2 .

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 31100122201 - 2¹ = 31100122199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31100122211) 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, 156496 + ... + 294433.

It is an arithmetic number, because the mean of its divisors is an integer number (4117216365).

Almost surely, 2^31100122201 is an apocalyptic number.

It is an amenable number.

31100122201 is a deficient number, since it is larger than the sum of its proper divisors (1837608719).

31100122201 is a wasteful number, since it uses less digits than its factorization.

31100122201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455003.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 31100122201 its reverse (10222100113), we get a palindrome (41322222314).

The spelling of 31100122201 in words is "thirty-one billion, one hundred million, one hundred twenty-two thousand, two hundred one".