31100106 has 16 divisors (see below), whose sum is σ = 65859264. Its totient is φ = 9756864.

The previous prime is 31100101. The next prime is 31100149. The reversal of 31100106 is 60100113.

It is a super-2 number, since 2×31100106² = 1934433186422472, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31100091 and 31100100.

It is not an unprimeable number, because it can be changed into a prime (31100101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152350 + ... + 152553.

It is an arithmetic number, because the mean of its divisors is an integer number (4116204).

Almost surely, 2^31100106 is an apocalyptic number.

31100106 is an abundant number, since it is smaller than the sum of its proper divisors (34759158).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31100106 is a wasteful number, since it uses less digits than its factorization.

31100106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304925.

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 31100106 is about 5576.7469011961. The cubic root of 31100106 is about 314.4758428286.

Adding to 31100106 its reverse (60100113), we get a palindrome (91200219).

The spelling of 31100106 in words is "thirty-one million, one hundred thousand, one hundred six".