30131020121 has 8 divisors (see below), whose sum is σ = 31138082304. Its totient is φ = 29126151360.

The previous prime is 30131020067. The next prime is 30131020123. The reversal of 30131020121 is 12102013103.

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

It is a cyclic number.

It is not a de Polignac number, because 30131020121 - 2⁶ = 30131020057 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30131020096 and 30131020105.

It is not an unprimeable number, because it can be changed into a prime (30131020123) 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, 520400 + ... + 575393.

It is an arithmetic number, because the mean of its divisors is an integer number (3892260288).

Almost surely, 2^30131020121 is an apocalyptic number.

30131020121 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

30131020121 is a deficient number, since it is larger than the sum of its proper divisors (1007062183).

30131020121 is a wasteful number, since it uses less digits than its factorization.

30131020121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1096711.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 30131020121 its reverse (12102013103), we get a palindrome (42233033224).

The spelling of 30131020121 in words is "thirty billion, one hundred thirty-one million, twenty thousand, one hundred twenty-one".