231302032130 has 64 divisors (see below), whose sum is σ = 479445710688. Its totient is φ = 79584153600.

The previous prime is 231302032103. The next prime is 231302032133. The reversal of 231302032130 is 31230203132.

It can be written as a sum of positive squares in 16 ways, for example, as 55270599409 + 176031432721 = 235097^2 + 419561^2 .

It is not an unprimeable number, because it can be changed into a prime (231302032133) 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, 294917 + ... + 741336.

Almost surely, 2^231302032130 is an apocalyptic number.

231302032130 is an abundant number, since it is smaller than the sum of its proper divisors (248143678558).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231302032130 is a wasteful number, since it uses less digits than its factorization.

231302032130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1036391.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 231302032130 its reverse (31230203132), we get a palindrome (262532235262).

The spelling of 231302032130 in words is "two hundred thirty-one billion, three hundred two million, thirty-two thousand, one hundred thirty".