31130144430 has 96 divisors (see below), whose sum is σ = 94811264640. Its totient is φ = 6468598080.

The previous prime is 31130144401. The next prime is 31130144431. The reversal of 31130144430 is 3444103113.

It is a self number, because there is not a number n which added to its sum of digits gives 31130144430.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31130144431) 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 47 ways as a sum of consecutive naturals, for example, 946420 + ... + 978759.

It is an arithmetic number, because the mean of its divisors is an integer number (987617340).

Almost surely, 2^31130144430 is an apocalyptic number.

31130144430 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31130144430 is an abundant number, since it is smaller than the sum of its proper divisors (63681120210).

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

31130144430 is a wasteful number, since it uses less digits than its factorization.

31130144430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1925214 (or 1925207 counting only the distinct ones).

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

Adding to 31130144430 its reverse (3444103113), we get a palindrome (34574247543).

The spelling of 31130144430 in words is "thirty-one billion, one hundred thirty million, one hundred forty-four thousand, four hundred thirty".