31143403343120 has 40 divisors (see below), whose sum is σ = 72409402727064. Its totient is φ = 12457191022592.

The previous prime is 31143403343111. The next prime is 31143403343177. The reversal of 31143403343120 is 2134330434113.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 437973945616 + 30705429397504 = 661796^2 + 5541248^2 .

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

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, 3310082 + ... + 8558238.

Almost surely, 2^{31143403343120} is an apocalyptic number.

It is an amenable number.

31143403343120 is an abundant number, since it is smaller than the sum of its proper divisors (41265999383944).

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

31143403343120 is a wasteful number, since it uses less digits than its factorization.

31143403343120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5322347 (or 5322341 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 32.

Adding to 31143403343120 its reverse (2134330434113), we get a palindrome (33277733777233).

The spelling of 31143403343120 in words is "thirty-one trillion, one hundred forty-three billion, four hundred three million, three hundred forty-three thousand, one hundred twenty".