30131022021 has 8 divisors (see below), whose sum is σ = 40588868544. Its totient is φ = 19880261760.

The previous prime is 30131021989. The next prime is 30131022083. The reversal of 30131022021 is 12022013103.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 30131022021 - 2⁵ = 30131021989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30131022091) 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, 51771225 + ... + 51771806.

It is an arithmetic number, because the mean of its divisors is an integer number (5073608568).

Almost surely, 2^30131022021 is an apocalyptic number.

It is an amenable number.

30131022021 is a deficient number, since it is larger than the sum of its proper divisors (10457846523).

30131022021 is a wasteful number, since it uses less digits than its factorization.

30131022021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103543131.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 30131022021 its reverse (12022013103), we get a palindrome (42153035124).

The spelling of 30131022021 in words is "thirty billion, one hundred thirty-one million, twenty-two thousand, twenty-one".