391231132193 has 16 divisors (see below), whose sum is σ = 440853614592. Its totient is φ = 343966338000.

The previous prime is 391231132093. The next prime is 391231132219.

391231132193 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 391231132193 - 2⁸ = 391231131937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (391231132093) 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 15 ways as a sum of consecutive naturals, for example, 147380 + ... + 896762.

It is an arithmetic number, because the mean of its divisors is an integer number (27553350912).

Almost surely, 2^391231132193 is an apocalyptic number.

It is an amenable number.

391231132193 is a deficient number, since it is larger than the sum of its proper divisors (49622482399).

391231132193 is a wasteful number, since it uses less digits than its factorization.

391231132193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 750956.

The product of its digits is 26244, while the sum is 38.

The spelling of 391231132193 in words is "three hundred ninety-one billion, two hundred thirty-one million, one hundred thirty-two thousand, one hundred ninety-three".