139831323 has 4 divisors (see below), whose sum is σ = 186441768. Its totient is φ = 93220880.

The previous prime is 139831309. The next prime is 139831339. The reversal of 139831323 is 323138931.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 139831323 - 2⁸ = 139831067 is a prime.

It is not an unprimeable number, because it can be changed into a prime (139831303) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23305218 + ... + 23305223.

It is an arithmetic number, because the mean of its divisors is an integer number (46610442).

Almost surely, 2^139831323 is an apocalyptic number.

139831323 is a deficient number, since it is larger than the sum of its proper divisors (46610445).

139831323 is an equidigital number, since it uses as much as digits as its factorization.

139831323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46610444.

The product of its digits is 11664, while the sum is 33.

The square root of 139831323 is about 11825.0295137052. The cubic root of 139831323 is about 519.0407896335.

The spelling of 139831323 in words is "one hundred thirty-nine million, eight hundred thirty-one thousand, three hundred twenty-three".