31130323 has 8 divisors (see below), whose sum is σ = 36405248. Its totient is φ = 26062344.

The previous prime is 31130299. The next prime is 31130327. The reversal of 31130323 is 32303113.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 31130323 - 2²¹ = 29033171 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31130297 and 31130306.

It is not an unprimeable number, because it can be changed into a prime (31130327) 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 7 ways as a sum of consecutive naturals, for example, 51411 + ... + 52012.

It is an arithmetic number, because the mean of its divisors is an integer number (4550656).

Almost surely, 2^31130323 is an apocalyptic number.

31130323 is a deficient number, since it is larger than the sum of its proper divisors (5274925).

31130323 is a wasteful number, since it uses less digits than its factorization.

31130323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103473.

The product of its (nonzero) digits is 162, while the sum is 16.

The square root of 31130323 is about 5579.4554393776. The cubic root of 31130323 is about 314.5776585656.

Adding to 31130323 its reverse (32303113), we get a palindrome (63433436).

The spelling of 31130323 in words is "thirty-one million, one hundred thirty thousand, three hundred twenty-three".