312204321532 has 36 divisors (see below), whose sum is σ = 561675469320. Its totient is φ = 151841968704.

The previous prime is 312204321529. The next prime is 312204321571. The reversal of 312204321532 is 235123402213.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 312204321532.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33141519 + ... + 33150937.

It is an arithmetic number, because the mean of its divisors is an integer number (15602096370).

Almost surely, 2^312204321532 is an apocalyptic number.

It is an amenable number.

312204321532 is a deficient number, since it is larger than the sum of its proper divisors (249471147788).

312204321532 is a wasteful number, since it uses less digits than its factorization.

312204321532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15550 (or 15511 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

Adding to 312204321532 its reverse (235123402213), we get a palindrome (547327723745).

The spelling of 312204321532 in words is "three hundred twelve billion, two hundred four million, three hundred twenty-one thousand, five hundred thirty-two".