31011122101 has 16 divisors (see below), whose sum is σ = 33405307200. Its totient is φ = 28680671488.

The previous prime is 31011122041. The next prime is 31011122143. The reversal of 31011122101 is 10122111013.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 31011122101 - 2¹³ = 31011113909 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 (31011122501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3418710 + ... + 3427768.

It is an arithmetic number, because the mean of its divisors is an integer number (2087831700).

Almost surely, 2^31011122101 is an apocalyptic number.

It is an amenable number.

31011122101 is a deficient number, since it is larger than the sum of its proper divisors (2394185099).

31011122101 is a wasteful number, since it uses less digits than its factorization.

31011122101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12548.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 31011122101 its reverse (10122111013), we get a palindrome (41133233114).

The spelling of 31011122101 in words is "thirty-one billion, eleven million, one hundred twenty-two thousand, one hundred one".