31812455304427 has 12 divisors (see below), whose sum is σ = 37025025178680. Its totient is φ = 27254040164736.

The previous prime is 31812455304419. The next prime is 31812455304449. The reversal of 31812455304427 is 72440355421813.

It is a happy number.

It is not a de Polignac number, because 31812455304427 - 2³ = 31812455304419 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is not an unprimeable number, because it can be changed into a prime (31812455304727) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 163933798 + ... + 164127739.

It is an arithmetic number, because the mean of its divisors is an integer number (3085418764890).

Almost surely, 2^{31812455304427} is an apocalyptic number.

31812455304427 is a deficient number, since it is larger than the sum of its proper divisors (5212569874253).

31812455304427 is a wasteful number, since it uses less digits than its factorization.

31812455304427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328063530 (or 328063523 counting only the distinct ones).

The product of its (nonzero) digits is 3225600, while the sum is 49.

The spelling of 31812455304427 in words is "thirty-one trillion, eight hundred twelve billion, four hundred fifty-five million, three hundred four thousand, four hundred twenty-seven".