31274152 has 144 divisors (see below), whose sum is σ = 82090260. Its totient is φ = 11031552.

The previous prime is 31274147. The next prime is 31274153. The reversal of 31274152 is 25147213.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 31203396 + 70756 = 5586^2 + 266^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31274153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1645999 + ... + 1646017.

Almost surely, 2^31274152 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 31274152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41045130).

31274152 is an abundant number, since it is smaller than the sum of its proper divisors (50816108).

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

31274152 is a wasteful number, since it uses less digits than its factorization.

31274152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88 (or 58 counting only the distinct ones).

The product of its digits is 1680, while the sum is 25.

The square root of 31274152 is about 5592.3297470732. The cubic root of 31274152 is about 315.0613872130.

The spelling of 31274152 in words is "thirty-one million, two hundred seventy-four thousand, one hundred fifty-two".