3138403 has 2 divisors, whose sum is σ = 3138404. Its totient is φ = 3138402.

The previous prime is 3138397. The next prime is 3138449. The reversal of 3138403 is 3048313.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3138403 - 2⁵ = 3138371 is a prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (3138493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1569201 + 1569202.

It is an arithmetic number, because the mean of its divisors is an integer number (1569202).

Almost surely, 2^3138403 is an apocalyptic number.

3138403 is a deficient number, since it is larger than the sum of its proper divisors (1).

3138403 is an equidigital number, since it uses as much as digits as its factorization.

3138403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 3138403 is about 1771.5538377368. The cubic root of 3138403 is about 146.4096053847.

The spelling of 3138403 in words is "three million, one hundred thirty-eight thousand, four hundred three".