311139005858 has 18 divisors (see below), whose sum is σ = 470303362641. Its totient is φ = 154380317584.

The previous prime is 311139005851. The next prime is 311139005897. The reversal of 311139005858 is 858500931113.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 308743588609 + 2395417249 = 555647^2 + 48943^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=394423.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (311139005851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 108070463 + ... + 108073341.

Almost surely, 2^311139005858 is an apocalyptic number.

311139005858 is a deficient number, since it is larger than the sum of its proper divisors (159164356783).

311139005858 is an frugal number, since it uses more digits than its factorization.

311139005858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6034 (or 3018 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 44.

The spelling of 311139005858 in words is "three hundred eleven billion, one hundred thirty-nine million, five thousand, eight hundred fifty-eight".