30531021021235 has 16 divisors (see below), whose sum is σ = 41885468853696. Its totient is φ = 20928380116608.

The previous prime is 30531021021233. The next prime is 30531021021247. The reversal of 30531021021235 is 53212012013503.

It is a cyclic number.

It is not a de Polignac number, because 30531021021235 - 2¹ = 30531021021233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30531021021233) 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, 149420512 + ... + 149624701.

It is an arithmetic number, because the mean of its divisors is an integer number (2617841803356).

Almost surely, 2^{30531021021235} is an apocalyptic number.

30531021021235 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

30531021021235 is a deficient number, since it is larger than the sum of its proper divisors (11354447832461).

30531021021235 is a wasteful number, since it uses less digits than its factorization.

30531021021235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299048142.

The product of its (nonzero) digits is 5400, while the sum is 28.

Adding to 30531021021235 its reverse (53212012013503), we get a palindrome (83743033034738).

The spelling of 30531021021235 in words is "thirty trillion, five hundred thirty-one billion, twenty-one million, twenty-one thousand, two hundred thirty-five".