2302131023021 has 4 divisors (see below), whose sum is σ = 2303212345500. Its totient is φ = 2301049700544.

The previous prime is 2302131023011. The next prime is 2302131023051. The reversal of 2302131023021 is 1203201312032.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 324341640100 + 1977789382921 = 569510^2 + 1406339^2 .

It is a cyclic number.

It is not a de Polignac number, because 2302131023021 - 2²² = 2302126828717 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2302131022984 and 2302131023002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2302131023011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 540658046 + ... + 540662303.

It is an arithmetic number, because the mean of its divisors is an integer number (575803086375).

Almost surely, 2^{2302131023021} is an apocalyptic number.

It is an amenable number.

2302131023021 is a deficient number, since it is larger than the sum of its proper divisors (1081322479).

2302131023021 is a wasteful number, since it uses less digits than its factorization.

2302131023021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1081322478.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 2302131023021 its reverse (1203201312032), we get a palindrome (3505332335053).

The spelling of 2302131023021 in words is "two trillion, three hundred two billion, one hundred thirty-one million, twenty-three thousand, twenty-one".