31230064420 has 24 divisors (see below), whose sum is σ = 65590971264. Its totient is φ = 12490533216.

The previous prime is 31230064273. The next prime is 31230064429. The reversal of 31230064420 is 2446003213.

It is not an unprimeable number, because it can be changed into a prime (31230064429) 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, 86767 + ... + 264553.

It is an arithmetic number, because the mean of its divisors is an integer number (2732957136).

Almost surely, 2^31230064420 is an apocalyptic number.

It is an amenable number.

31230064420 is an abundant number, since it is smaller than the sum of its proper divisors (34360906844).

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

31230064420 is a wasteful number, since it uses less digits than its factorization.

31230064420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186579 (or 186577 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 31230064420 its reverse (2446003213), we get a palindrome (33676067633).

The spelling of 31230064420 in words is "thirty-one billion, two hundred thirty million, sixty-four thousand, four hundred twenty".