31344152 has 32 divisors (see below), whose sum is σ = 67806720. Its totient is φ = 13305120.

The previous prime is 31344151. The next prime is 31344169. The reversal of 31344152 is 25144313.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31344151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3377 + ... + 8607.

It is an arithmetic number, because the mean of its divisors is an integer number (2118960).

Almost surely, 2^31344152 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31344152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33903360).

31344152 is an abundant number, since it is smaller than the sum of its proper divisors (36462568).

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

31344152 is a wasteful number, since it uses less digits than its factorization.

31344152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5351 (or 5347 counting only the distinct ones).

The product of its digits is 1440, while the sum is 23.

The square root of 31344152 is about 5598.5848211847. The cubic root of 31344152 is about 315.2962762149.

Adding to 31344152 its reverse (25144313), we get a palindrome (56488465).

The spelling of 31344152 in words is "thirty-one million, three hundred forty-four thousand, one hundred fifty-two".