31445106 has 64 divisors (see below), whose sum is σ = 81146880. Its totient is φ = 7882560.

The previous prime is 31445093. The next prime is 31445107. The reversal of 31445106 is 60154413.

It is not an unprimeable number, because it can be changed into a prime (31445107) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12225 + ... + 14571.

It is an arithmetic number, because the mean of its divisors is an integer number (1267920).

Almost surely, 2^31445106 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31445106, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40573440).

31445106 is an abundant number, since it is smaller than the sum of its proper divisors (49701774).

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

31445106 is a wasteful number, since it uses less digits than its factorization.

31445106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2399.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 31445106 is about 5607.5936015371. The cubic root of 31445106 is about 315.6344180570.

Adding to 31445106 its reverse (60154413), we get a palindrome (91599519).

The spelling of 31445106 in words is "thirty-one million, four hundred forty-five thousand, one hundred six".