31358106 has 48 divisors (see below), whose sum is σ = 75708360. Its totient is φ = 9313920.

The previous prime is 31358083. The next prime is 31358123. The reversal of 31358106 is 60185313.

It can be written as a sum of positive squares in 4 ways, for example, as 20169081 + 11189025 = 4491^2 + 3345^2 .

It is a plaindrome in base 11.

It is a self number, because there is not a number n which added to its sum of digits gives 31358106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4476 + ... + 9096.

Almost surely, 2^31358106 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31358106, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37854180).

31358106 is an abundant number, since it is smaller than the sum of its proper divisors (44350254).

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

31358106 is a wasteful number, since it uses less digits than its factorization.

31358106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4671 (or 4668 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 31358106 is about 5599.8308903037. The cubic root of 31358106 is about 315.3430578444.

The spelling of 31358106 in words is "thirty-one million, three hundred fifty-eight thousand, one hundred six".