31538052 has 96 divisors (see below), whose sum is σ = 100665600. Its totient is φ = 8315136.

The previous prime is 31538047. The next prime is 31538053. The reversal of 31538052 is 25083513.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31538053) 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, 8224 + ... + 11432.

It is an arithmetic number, because the mean of its divisors is an integer number (1048600).

Almost surely, 2^31538052 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 31538052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50332800).

31538052 is an abundant number, since it is smaller than the sum of its proper divisors (69127548).

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

31538052 is a wasteful number, since it uses less digits than its factorization.

31538052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3242 (or 3234 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 31538052 is about 5615.8749986089. The cubic root of 31538052 is about 315.9450980835.

The spelling of 31538052 in words is "thirty-one million, five hundred thirty-eight thousand, fifty-two".