31047102 has 48 divisors (see below), whose sum is σ = 73906560. Its totient is φ = 9375696.

The previous prime is 31047101. The next prime is 31047143. The reversal of 31047102 is 20174013.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31047101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5893 + ... + 9839.

It is an arithmetic number, because the mean of its divisors is an integer number (1539720).

Almost surely, 2^31047102 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31047102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36953280).

31047102 is an abundant number, since it is smaller than the sum of its proper divisors (42859458).

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

31047102 is a wasteful number, since it uses less digits than its factorization.

31047102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3997 (or 3994 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 31047102 is about 5571.9926417755. The cubic root of 31047102 is about 314.2970872114.

The spelling of 31047102 in words is "thirty-one million, forty-seven thousand, one hundred two".