31278304945923 has 8 divisors (see below), whose sum is σ = 47662178965248. Its totient is φ = 17873317111944.

The previous prime is 31278304945891. The next prime is 31278304945933. The reversal of 31278304945923 is 32954940387213.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 31278304945923 - 2⁵ = 31278304945891 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31278304945933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 744721546311 + ... + 744721546352.

It is an arithmetic number, because the mean of its divisors is an integer number (5957772370656).

Almost surely, 2^{31278304945923} is an apocalyptic number.

31278304945923 is a deficient number, since it is larger than the sum of its proper divisors (16383874019325).

31278304945923 is a wasteful number, since it uses less digits than its factorization.

31278304945923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1489443092673.

The product of its (nonzero) digits is 39191040, while the sum is 60.

The spelling of 31278304945923 in words is "thirty-one trillion, two hundred seventy-eight billion, three hundred four million, nine hundred forty-five thousand, nine hundred twenty-three".