31150 has 24 divisors (see below), whose sum is σ = 66960. Its totient is φ = 10560.

The previous prime is 31147. The next prime is 31151. The reversal of 31150 is 5113.

It is a Harshad number since it is a multiple of its sum of digits (10).

31150 is a Rhonda number in base 15.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31151) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 306 + ... + 394.

It is an arithmetic number, because the mean of its divisors is an integer number (2790).

2³¹¹⁵⁰ is an apocalyptic number.

31150 is an abundant number, since it is smaller than the sum of its proper divisors (35810).

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33480).

31150 is a wasteful number, since it uses less digits than its factorization.

31150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108 (or 103 counting only the distinct ones).

The product of its (nonzero) digits is 15, while the sum is 10.

The square root of 31150 is about 176.4936259472. The cubic root of 31150 is about 31.4643924511.

Adding to 31150 its reverse (5113), we get a palindrome (36263).

It can be divided in two parts, 311 and 50, that added together give a square (361 = 19²).

The spelling of 31150 in words is "thirty-one thousand, one hundred fifty".