30131042440 has 32 divisors (see below), whose sum is σ = 67838472000. Its totient is φ = 12044661184.

The previous prime is 30131042351. The next prime is 30131042443. The reversal of 30131042440 is 4424013103.

It is not an unprimeable number, because it can be changed into a prime (30131042443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 179230 + ... + 303949.

It is an arithmetic number, because the mean of its divisors is an integer number (2119952250).

Almost surely, 2^30131042440 is an apocalyptic number.

It is an amenable number.

30131042440 is an abundant number, since it is smaller than the sum of its proper divisors (37707429560).

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

30131042440 is a wasteful number, since it uses less digits than its factorization.

30131042440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 484749 (or 484745 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 30131042440 its reverse (4424013103), we get a palindrome (34555055543).

The spelling of 30131042440 in words is "thirty billion, one hundred thirty-one million, forty-two thousand, four hundred forty".