134394443931 has 32 divisors (see below), whose sum is σ = 196219616256. Its totient is φ = 81144612000.

The previous prime is 134394443927. The next prime is 134394443971. The reversal of 134394443931 is 139344493431.

It is not a de Polignac number, because 134394443931 - 2² = 134394443927 is a prime.

It is a super-2 number, since 2×134394443931² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (134394443971) 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 31 ways as a sum of consecutive naturals, for example, 14778696 + ... + 14787786.

It is an arithmetic number, because the mean of its divisors is an integer number (6131863008).

Almost surely, 2^134394443931 is an apocalyptic number.

134394443931 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

134394443931 is a deficient number, since it is larger than the sum of its proper divisors (61825172325).

134394443931 is a wasteful number, since it uses less digits than its factorization.

134394443931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10743.

The product of its digits is 1679616, while the sum is 48.

The spelling of 134394443931 in words is "one hundred thirty-four billion, three hundred ninety-four million, four hundred forty-three thousand, nine hundred thirty-one".