312661622652 has 48 divisors (see below), whose sum is σ = 772558107552. Its totient is φ = 98077224960.

The previous prime is 312661622641. The next prime is 312661622659. The reversal of 312661622652 is 256226166213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312661622659) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1547652 + ... + 1737972.

It is an arithmetic number, because the mean of its divisors is an integer number (16094960574).

Almost surely, 2^312661622652 is an apocalyptic number.

It is an amenable number.

312661622652 is an abundant number, since it is smaller than the sum of its proper divisors (459896484900).

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

312661622652 is a wasteful number, since it uses less digits than its factorization.

312661622652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198398 (or 198396 counting only the distinct ones).

The product of its digits is 311040, while the sum is 42.

Adding to 312661622652 its reverse (256226166213), we get a palindrome (568887788865).

The spelling of 312661622652 in words is "three hundred twelve billion, six hundred sixty-one million, six hundred twenty-two thousand, six hundred fifty-two".