30531022145 has 16 divisors (see below), whose sum is σ = 39459216720. Its totient is φ = 22543847424.

The previous prime is 30531022141. The next prime is 30531022169. The reversal of 30531022145 is 54122013503.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 19191115024 + 11339907121 = 138532^2 + 106489^2 .

It is a cyclic number.

It is not a de Polignac number, because 30531022145 - 2² = 30531022141 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (30531022141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1100201 + ... + 1127609.

It is an arithmetic number, because the mean of its divisors is an integer number (2466201045).

Almost surely, 2^30531022145 is an apocalyptic number.

It is an amenable number.

30531022145 is a deficient number, since it is larger than the sum of its proper divisors (8928194575).

30531022145 is a wasteful number, since it uses less digits than its factorization.

30531022145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44564.

The product of its (nonzero) digits is 3600, while the sum is 26.

Adding to 30531022145 its reverse (54122013503), we get a palindrome (84653035648).

The spelling of 30531022145 in words is "thirty billion, five hundred thirty-one million, twenty-two thousand, one hundred forty-five".