310431140020 has 48 divisors (see below), whose sum is σ = 670345175808. Its totient is φ = 120683152640.

The previous prime is 310431140009. The next prime is 310431140021. The reversal of 310431140020 is 20041134013.

It is a self number, because there is not a number n which added to its sum of digits gives 310431140020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (310431140021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 504064 + ... + 935383.

It is an arithmetic number, because the mean of its divisors is an integer number (13965524496).

Almost surely, 2^310431140020 is an apocalyptic number.

It is an amenable number.

310431140020 is an abundant number, since it is smaller than the sum of its proper divisors (359914035788).

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

310431140020 is a wasteful number, since it uses less digits than its factorization.

310431140020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1439760 (or 1439758 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 310431140020 its reverse (20041134013), we get a palindrome (330472274033).

The spelling of 310431140020 in words is "three hundred ten billion, four hundred thirty-one million, one hundred forty thousand, twenty".