1339143061 has 4 divisors (see below), whose sum is σ = 1342676800. Its totient is φ = 1335609324.

The previous prime is 1339143059. The next prime is 1339143077. The reversal of 1339143061 is 1603419331.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1339143061 - 2¹ = 1339143059 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1339143011) 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, 1766301 + ... + 1767058.

It is an arithmetic number, because the mean of its divisors is an integer number (335669200).

Almost surely, 2^1339143061 is an apocalyptic number.

It is an amenable number.

1339143061 is a deficient number, since it is larger than the sum of its proper divisors (3533739).

1339143061 is an equidigital number, since it uses as much as digits as its factorization.

1339143061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3533738.

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 1339143061 is about 36594.3036687406. The cubic root of 1339143061 is about 1102.2387082073.

It can be divided in two parts, 1339 and 143061, that added together give a square (144400 = 380²).

The spelling of 1339143061 in words is "one billion, three hundred thirty-nine million, one hundred forty-three thousand, sixty-one".