30311132021 has 16 divisors (see below), whose sum is σ = 32187196800. Its totient is φ = 28494771648.

The previous prime is 30311132011. The next prime is 30311132077. The reversal of 30311132021 is 12023111303.

It is a cyclic number.

It is not a de Polignac number, because 30311132021 - 2¹⁸ = 30310869877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30311132011) 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, 356960 + ... + 433638.

It is an arithmetic number, because the mean of its divisors is an integer number (2011699800).

Almost surely, 2^30311132021 is an apocalyptic number.

It is an amenable number.

30311132021 is a deficient number, since it is larger than the sum of its proper divisors (1876064779).

30311132021 is a wasteful number, since it uses less digits than its factorization.

30311132021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77068.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 30311132021 its reverse (12023111303), we get a palindrome (42334243324).

The spelling of 30311132021 in words is "thirty billion, three hundred eleven million, one hundred thirty-two thousand, twenty-one".