31130 has 16 divisors (see below), whose sum is σ = 61344. Its totient is φ = 11280.

The previous prime is 31123. The next prime is 31139. The reversal of 31130 is 3113.

It is a plaindrome in base 13 and base 16.

It is not an unprimeable number, because it can be changed into a prime (31139) 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, 32 + ... + 251.

It is an arithmetic number, because the mean of its divisors is an integer number (3834).

2³¹¹³⁰ is an apocalyptic number.

31130 is a deficient number, since it is larger than the sum of its proper divisors (30214).

31130 is a wasteful number, since it uses less digits than its factorization.

31130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301.

The product of its (nonzero) digits is 9, while the sum is 8.

The square root of 31130 is about 176.4369575798. The cubic root of 31130 is about 31.4576570570.

Adding to 31130 its reverse (3113), we get a palindrome (34243).

It can be divided in two parts, 31 and 130, that added together give a palindrome (161).

The spelling of 31130 in words is "thirty-one thousand, one hundred thirty".