31130343420 has 96 divisors (see below), whose sum is σ = 96292869120. Its totient is φ = 7451208960.

The previous prime is 31130343389. The next prime is 31130343427. The reversal of 31130343420 is 2434303113.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31130343427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 246387 + ... + 350666.

It is an arithmetic number, because the mean of its divisors is an integer number (1003050720).

Almost surely, 2^31130343420 is an apocalyptic number.

31130343420 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31130343420 is an abundant number, since it is smaller than the sum of its proper divisors (65162525700).

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

31130343420 is a wasteful number, since it uses less digits than its factorization.

31130343420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 597155 (or 597153 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 31130343420 its reverse (2434303113), we get a palindrome (33564646533).

The spelling of 31130343420 in words is "thirty-one billion, one hundred thirty million, three hundred forty-three thousand, four hundred twenty".