30531503140 has 12 divisors (see below), whose sum is σ = 64116156636. Its totient is φ = 12212601248.

The previous prime is 30531503129. The next prime is 30531503147. The reversal of 30531503140 is 4130513503.

It can be written as a sum of positive squares in 2 ways, for example, as 12736476736 + 17795026404 = 112856^2 + 133398^2 .

It is not an unprimeable number, because it can be changed into a prime (30531503147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 763287559 + ... + 763287598.

It is an arithmetic number, because the mean of its divisors is an integer number (5343013053).

Almost surely, 2^30531503140 is an apocalyptic number.

It is an amenable number.

30531503140 is an abundant number, since it is smaller than the sum of its proper divisors (33584653496).

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

30531503140 is a wasteful number, since it uses less digits than its factorization.

30531503140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1526575166 (or 1526575164 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 25.

The spelling of 30531503140 in words is "thirty billion, five hundred thirty-one million, five hundred three thousand, one hundred forty".