31130323043 has 4 divisors (see below), whose sum is σ = 31854284088. Its totient is φ = 30406362000.

The previous prime is 31130323009. The next prime is 31130323067. The reversal of 31130323043 is 34032303113.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 31130323043 - 2³⁴ = 13950453859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31130323073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 361980458 + ... + 361980543.

It is an arithmetic number, because the mean of its divisors is an integer number (7963571022).

Almost surely, 2^31130323043 is an apocalyptic number.

31130323043 is a deficient number, since it is larger than the sum of its proper divisors (723961045).

31130323043 is an equidigital number, since it uses as much as digits as its factorization.

31130323043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 723961044.

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 31130323043 its reverse (34032303113), we get a palindrome (65162626156).

The spelling of 31130323043 in words is "thirty-one billion, one hundred thirty million, three hundred twenty-three thousand, forty-three".