231303031030 has 16 divisors (see below), whose sum is σ = 418838545440. Its totient is φ = 91967192512.

The previous prime is 231303031021. The next prime is 231303031087. The reversal of 231303031030 is 30130303132.

It is a junction number, because it is equal to n+sod(n) for n = 231303030989 and 231303031007.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69250735 + ... + 69254074.

It is an arithmetic number, because the mean of its divisors is an integer number (26177409090).

Almost surely, 2^231303031030 is an apocalyptic number.

231303031030 is a deficient number, since it is larger than the sum of its proper divisors (187535514410).

231303031030 is a wasteful number, since it uses less digits than its factorization.

231303031030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138504983.

The product of its (nonzero) digits is 486, while the sum is 19.

Adding to 231303031030 its reverse (30130303132), we get a palindrome (261433334162).

The spelling of 231303031030 in words is "two hundred thirty-one billion, three hundred three million, thirty-one thousand, thirty".