139312 has 10 divisors (see below), whose sum is σ = 269948. Its totient is φ = 69648.

The previous prime is 139309. The next prime is 139313. The reversal of 139312 is 213931.

It is a plaindrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 139312.

It is not an unprimeable number, because it can be changed into a prime (139313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4338 + ... + 4369.

2¹³⁹³¹² is an apocalyptic number.

It is an amenable number.

139312 is a deficient number, since it is larger than the sum of its proper divisors (130636).

139312 is an equidigital number, since it uses as much as digits as its factorization.

139312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8715 (or 8709 counting only the distinct ones).

The product of its digits is 162, while the sum is 19.

The square root of 139312 is about 373.2452276989. The cubic root of 139312 is about 51.8397433051.

The spelling of 139312 in words is "one hundred thirty-nine thousand, three hundred twelve".