231620302312 has 64 divisors (see below), whose sum is σ = 498090096000. Its totient is φ = 98914072320.

The previous prime is 231620302307. The next prime is 231620302349. The reversal of 231620302312 is 213203026132.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37775487 + ... + 37781617.

It is an arithmetic number, because the mean of its divisors is an integer number (7782657750).

Almost surely, 2^231620302312 is an apocalyptic number.

It is an amenable number.

231620302312 is an abundant number, since it is smaller than the sum of its proper divisors (266469793688).

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

231620302312 is a wasteful number, since it uses less digits than its factorization.

231620302312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8426 (or 8422 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 231620302312 its reverse (213203026132), we get a palindrome (444823328444).

The spelling of 231620302312 in words is "two hundred thirty-one billion, six hundred twenty million, three hundred two thousand, three hundred twelve".