31430020240100 has 36 divisors (see below), whose sum is σ = 68204231983104. Its totient is φ = 12571807531680.

The previous prime is 31430020240007. The next prime is 31430020240127. The reversal of 31430020240100 is 104202003413.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 3873389 + ... + 8824011.

Almost surely, 2^{31430020240100} is an apocalyptic number.

It is an amenable number.

31430020240100 is an abundant number, since it is smaller than the sum of its proper divisors (36774211743004).

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

31430020240100 is a wasteful number, since it uses less digits than its factorization.

31430020240100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5014124 (or 5014117 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 31430020240100 its reverse (104202003413), we get a palindrome (31534222243513).

The spelling of 31430020240100 in words is "thirty-one trillion, four hundred thirty billion, twenty million, two hundred forty thousand, one hundred".