31143352114240 has 28 divisors (see below), whose sum is σ = 74160107222796. Its totient is φ = 12457340845568.

The previous prime is 31143352114229. The next prime is 31143352114267. The reversal of 31143352114240 is 4241125334113.

It can be written as a sum of positive squares in 2 ways, for example, as 8216799318016 + 22926552796224 = 2866496^2 + 4788168^2 .

It is a junction number, because it is equal to n+sod(n) for n = 31143352114196 and 31143352114205.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48661487359 + ... + 48661487998.

It is an arithmetic number, because the mean of its divisors is an integer number (2648575257957).

Almost surely, 2^{31143352114240} is an apocalyptic number.

It is an amenable number.

31143352114240 is an abundant number, since it is smaller than the sum of its proper divisors (43016755108556).

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

31143352114240 is an equidigital number, since it uses as much as digits as its factorization.

31143352114240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97322975374 (or 97322975364 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 34.

Adding to 31143352114240 its reverse (4241125334113), we get a palindrome (35384477448353).

The spelling of 31143352114240 in words is "thirty-one trillion, one hundred forty-three billion, three hundred fifty-two million, one hundred fourteen thousand, two hundred forty".