31143012433340 has 48 divisors (see below), whose sum is σ = 67656099420000. Its totient is φ = 12027541354752.

The previous prime is 31143012433261. The next prime is 31143012433391. The reversal of 31143012433340 is 4333421034113.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 31143012433297 and 31143012433306.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 116736182 + ... + 117002658.

It is an arithmetic number, because the mean of its divisors is an integer number (1409502071250).

Almost surely, 2^{31143012433340} is an apocalyptic number.

It is an amenable number.

31143012433340 is an abundant number, since it is smaller than the sum of its proper divisors (36513086986660).

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

31143012433340 is a wasteful number, since it uses less digits than its factorization.

31143012433340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468014 (or 468012 counting only the distinct ones).

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

Adding to 31143012433340 its reverse (4333421034113), we get a palindrome (35476433467453).

The spelling of 31143012433340 in words is "thirty-one trillion, one hundred forty-three billion, twelve million, four hundred thirty-three thousand, three hundred forty".