2030023694521 has 3 divisors (see below), whose sum is σ = 2030025119311. Its totient is φ = 2030022269732.

The previous prime is 2030023694519. The next prime is 2030023694563. The reversal of 2030023694521 is 1254963200302.

The square root of 2030023694521 is 1424789.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 104756442921 + 1925267251600 = 323661^2 + 1387540^2 .

It is not a de Polignac number, because 2030023694521 - 2¹ = 2030023694519 is a prime.

It is a super-3 number, since 3×2030023694521³ (a number of 38 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2030023694581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 712395 + ... + 2137183.

Almost surely, 2^{2030023694521} is an apocalyptic number.

2030023694521 is the 1424789-th square number.

2030023694521 is the 712395-th centered octagonal number.

It is an amenable number.

2030023694521 is a deficient number, since it is larger than the sum of its proper divisors (1424790).

2030023694521 is an frugal number, since it uses more digits than its factorization.

2030023694521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2849578 (or 1424789 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 37.

Adding to 2030023694521 its reverse (1254963200302), we get a palindrome (3284986894823).

The spelling of 2030023694521 in words is "two trillion, thirty billion, twenty-three million, six hundred ninety-four thousand, five hundred twenty-one".