30202313131021 has 32 divisors (see below), whose sum is σ = 31181950356480. Its totient is φ = 29237717477376.

The previous prime is 30202313130991. The next prime is 30202313131139. The reversal of 30202313131021 is 12013131320203.

It is a cyclic number.

It is not a de Polignac number, because 30202313131021 - 2²⁹ = 30201776260109 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30202313130983 and 30202313131001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30202313131721) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10875876585 + ... + 10875879361.

It is an arithmetic number, because the mean of its divisors is an integer number (974435948640).

Almost surely, 2^{30202313131021} is an apocalyptic number.

It is an amenable number.

30202313131021 is a deficient number, since it is larger than the sum of its proper divisors (979637225459).

30202313131021 is a wasteful number, since it uses less digits than its factorization.

30202313131021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5853.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 30202313131021 its reverse (12013131320203), we get a palindrome (42215444451224).

The spelling of 30202313131021 in words is "thirty trillion, two hundred two billion, three hundred thirteen million, one hundred thirty-one thousand, twenty-one".