73123403 has 2 divisors, whose sum is σ = 73123404. Its totient is φ = 73123402.

The previous prime is 73123387. The next prime is 73123487. The reversal of 73123403 is 30432137.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 73123403 - 2⁴ = 73123387 is a prime.

It is not a weakly prime, because it can be changed into another prime (73123903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36561701 + 36561702.

It is an arithmetic number, because the mean of its divisors is an integer number (36561702).

Almost surely, 2^73123403 is an apocalyptic number.

73123403 is a deficient number, since it is larger than the sum of its proper divisors (1).

73123403 is an equidigital number, since it uses as much as digits as its factorization.

73123403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 23.

The square root of 73123403 is about 8551.2223102899. Note that the first 3 decimals coincide. The cubic root of 73123403 is about 418.1692861470.

The spelling of 73123403 in words is "seventy-three million, one hundred twenty-three thousand, four hundred three".