139231370391 has 8 divisors (see below), whose sum is σ = 185942707824. Its totient is φ = 92670473280.

The previous prime is 139231370351. The next prime is 139231370393. The reversal of 139231370391 is 193073132931.

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

It is not a de Polignac number, because 139231370391 - 2¹³ = 139231362199 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139231370393) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37607920 + ... + 37611621.

It is an arithmetic number, because the mean of its divisors is an integer number (23242838478).

Almost surely, 2^139231370391 is an apocalyptic number.

139231370391 is a deficient number, since it is larger than the sum of its proper divisors (46711337433).

139231370391 is an equidigital number, since it uses as much as digits as its factorization.

139231370391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75220161.

The product of its (nonzero) digits is 91854, while the sum is 42.

The spelling of 139231370391 in words is "one hundred thirty-nine billion, two hundred thirty-one million, three hundred seventy thousand, three hundred ninety-one".