31120152 has 64 divisors (see below), whose sum is σ = 90201600. Its totient is φ = 8762880.

The previous prime is 31120121. The next prime is 31120153. The reversal of 31120152 is 25102113.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31120153) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10624 + ... + 13232.

It is an arithmetic number, because the mean of its divisors is an integer number (1409400).

Almost surely, 2^31120152 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 31120152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45100800).

31120152 is an abundant number, since it is smaller than the sum of its proper divisors (59081448).

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

31120152 is a wasteful number, since it uses less digits than its factorization.

31120152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2696 (or 2692 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 31120152 is about 5578.5438960360. The cubic root of 31120152 is about 314.5433948898.

Adding to 31120152 its reverse (25102113), we get a palindrome (56222265).

The spelling of 31120152 in words is "thirty-one million, one hundred twenty thousand, one hundred fifty-two".