231305100002 has 4 divisors (see below), whose sum is σ = 346957650006. Its totient is φ = 115652550000.

The previous prime is 231305099981. The next prime is 231305100007. The reversal of 231305100002 is 200001503132.

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., 224239184521 + 7065915481 = 473539^2 + 84059^2 .

It is not an unprimeable number, because it can be changed into a prime (231305100007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57826274999 + ... + 57826275002.

Almost surely, 2^231305100002 is an apocalyptic number.

231305100002 is a deficient number, since it is larger than the sum of its proper divisors (115652550004).

231305100002 is a wasteful number, since it uses less digits than its factorization.

231305100002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115652550003.

The product of its (nonzero) digits is 180, while the sum is 17.

Adding to 231305100002 its reverse (200001503132), we get a palindrome (431306603134).

The spelling of 231305100002 in words is "two hundred thirty-one billion, three hundred five million, one hundred thousand, two".