139313061 has 8 divisors (see below), whose sum is σ = 206389760. Its totient is φ = 92875356.

The previous prime is 139313059. The next prime is 139313087. The reversal of 139313061 is 160313931.

It is not a de Polignac number, because 139313061 - 2¹ = 139313059 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 5159743 = 139313061 / (1 + 3 + 9 + 3 + 1 + 3 + 0 + 6 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139313051) 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, 2579845 + ... + 2579898.

It is an arithmetic number, because the mean of its divisors is an integer number (25798720).

Almost surely, 2^139313061 is an apocalyptic number.

It is an amenable number.

139313061 is a deficient number, since it is larger than the sum of its proper divisors (67076699).

139313061 is an equidigital number, since it uses as much as digits as its factorization.

139313061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5159752 (or 5159746 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 27.

The square root of 139313061 is about 11803.0953990892. The cubic root of 139313061 is about 518.3987490861.

Adding to 139313061 its reverse (160313931), we get a palindrome (299626992).

The spelling of 139313061 in words is "one hundred thirty-nine million, three hundred thirteen thousand, sixty-one".