139285311 has 8 divisors (see below), whose sum is σ = 202596864. Its totient is φ = 84415320.

The previous prime is 139285291. The next prime is 139285339. The reversal of 139285311 is 113582931.

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

It is not a de Polignac number, because 139285311 - 2¹³ = 139277119 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 4220767 = 139285311 / (1 + 3 + 9 + 2 + 8 + 5 + 3 + 1 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139285361) 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, 2110351 + ... + 2110416.

It is an arithmetic number, because the mean of its divisors is an integer number (25324608).

Almost surely, 2^139285311 is an apocalyptic number.

139285311 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

139285311 is a deficient number, since it is larger than the sum of its proper divisors (63311553).

139285311 is a wasteful number, since it uses less digits than its factorization.

139285311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4220781.

The product of its digits is 6480, while the sum is 33.

The square root of 139285311 is about 11801.9198014560. The cubic root of 139285311 is about 518.3643265645.

The spelling of 139285311 in words is "one hundred thirty-nine million, two hundred eighty-five thousand, three hundred eleven".