202130444434 has 4 divisors (see below), whose sum is σ = 303195666654. Its totient is φ = 101065222216.

The previous prime is 202130444407. The next prime is 202130444437. The reversal of 202130444434 is 434444031202.

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

It can be written as a sum of positive squares in only one way, i.e., 160878803409 + 41251641025 = 401097^2 + 203105^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 202130444396 and 202130444405.

It is not an unprimeable number, because it can be changed into a prime (202130444437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50532611107 + ... + 50532611110.

Almost surely, 2^202130444434 is an apocalyptic number.

202130444434 is a deficient number, since it is larger than the sum of its proper divisors (101065222220).

202130444434 is a wasteful number, since it uses less digits than its factorization.

202130444434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101065222219.

The product of its (nonzero) digits is 36864, while the sum is 31.

Adding to 202130444434 its reverse (434444031202), we get a palindrome (636574475636).

The spelling of 202130444434 in words is "two hundred two billion, one hundred thirty million, four hundred forty-four thousand, four hundred thirty-four".