31032112101 has 4 divisors (see below), whose sum is σ = 41376149472. Its totient is φ = 20688074732.

The previous prime is 31032112091. The next prime is 31032112109. The reversal of 31032112101 is 10121123013.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 31032112101 - 2⁶ = 31032112037 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31032112109) 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, 5172018681 + ... + 5172018686.

It is an arithmetic number, because the mean of its divisors is an integer number (10344037368).

Almost surely, 2^31032112101 is an apocalyptic number.

It is an amenable number.

31032112101 is a deficient number, since it is larger than the sum of its proper divisors (10344037371).

31032112101 is a wasteful number, since it uses less digits than its factorization.

31032112101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10344037370.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 31032112101 its reverse (10121123013), we get a palindrome (41153235114).

The spelling of 31032112101 in words is "thirty-one billion, thirty-two million, one hundred twelve thousand, one hundred one".