31430123343120 has 40 divisors (see below), whose sum is σ = 97433382364416. Its totient is φ = 8381366224768.

The previous prime is 31430123342999. The next prime is 31430123343161. The reversal of 31430123343120 is 2134332103413.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65479423392 + ... + 65479423871.

Almost surely, 2^{31430123343120} is an apocalyptic number.

31430123343120 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31430123343120 is an abundant number, since it is smaller than the sum of its proper divisors (66003259021296).

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

31430123343120 is a wasteful number, since it uses less digits than its factorization.

31430123343120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130958847279 (or 130958847273 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 30.

Adding to 31430123343120 its reverse (2134332103413), we get a palindrome (33564455446533).

The spelling of 31430123343120 in words is "thirty-one trillion, four hundred thirty billion, one hundred twenty-three million, three hundred forty-three thousand, one hundred twenty".