3139723 has 2 divisors, whose sum is σ = 3139724. Its totient is φ = 3139722.

The previous prime is 3139699. The next prime is 3139727. The reversal of 3139723 is 3279313.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3139723 - 2²¹ = 1042571 is a prime.

It is an Ulam number.

3139723 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 3139691 and 3139700.

It is not a weakly prime, because it can be changed into another prime (3139727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1569861 + 1569862.

It is an arithmetic number, because the mean of its divisors is an integer number (1569862).

Almost surely, 2^3139723 is an apocalyptic number.

3139723 is a deficient number, since it is larger than the sum of its proper divisors (1).

3139723 is an equidigital number, since it uses as much as digits as its factorization.

3139723 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3402, while the sum is 28.

The square root of 3139723 is about 1771.9263528714. The cubic root of 3139723 is about 146.4301289430.

The spelling of 3139723 in words is "three million, one hundred thirty-nine thousand, seven hundred twenty-three".