31942116 has 144 divisors (see below), whose sum is σ = 93562560. Its totient is φ = 9123840.

The previous prime is 31942109. The next prime is 31942117. The reversal of 31942116 is 61124913.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 31942116.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31942117) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 476715 + ... + 476781.

It is an arithmetic number, because the mean of its divisors is an integer number (649740).

Almost surely, 2^31942116 is an apocalyptic number.

31942116 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31942116, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46781280).

31942116 is an abundant number, since it is smaller than the sum of its proper divisors (61620444).

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

31942116 is a wasteful number, since it uses less digits than its factorization.

31942116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154 (or 149 counting only the distinct ones).

The product of its digits is 1296, while the sum is 27.

The square root of 31942116 is about 5651.7356626084. The cubic root of 31942116 is about 317.2886675163.

The spelling of 31942116 in words is "thirty-one million, nine hundred forty-two thousand, one hundred sixteen".