31130244231 has 8 divisors (see below), whose sum is σ = 41874311280. Its totient is φ = 20569836672.

The previous prime is 31130244227. The next prime is 31130244251. The reversal of 31130244231 is 13244203113.

It is a happy number.

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

It is not a de Polignac number, because 31130244231 - 2² = 31130244227 is a prime.

It is a super-2 number, since 2×31130244231² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31130244221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45914476 + ... + 45915153.

It is an arithmetic number, because the mean of its divisors is an integer number (5234288910).

Almost surely, 2^31130244231 is an apocalyptic number.

31130244231 is a deficient number, since it is larger than the sum of its proper divisors (10744067049).

31130244231 is a wasteful number, since it uses less digits than its factorization.

31130244231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91829745.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 31130244231 its reverse (13244203113), we get a palindrome (44374447344).

The spelling of 31130244231 in words is "thirty-one billion, one hundred thirty million, two hundred forty-four thousand, two hundred thirty-one".