280152403 has 2 divisors, whose sum is σ = 280152404. Its totient is φ = 280152402.

The previous prime is 280152391. The next prime is 280152409. The reversal of 280152403 is 304251082.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 280152403 - 2⁵ = 280152371 is a prime.

It is not a weakly prime, because it can be changed into another prime (280152409) 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, 140076201 + 140076202.

It is an arithmetic number, because the mean of its divisors is an integer number (140076202).

Almost surely, 2^280152403 is an apocalyptic number.

280152403 is a deficient number, since it is larger than the sum of its proper divisors (1).

280152403 is an equidigital number, since it uses as much as digits as its factorization.

280152403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 280152403 is about 16737.7538218245. The cubic root of 280152403 is about 654.3319358231.

The spelling of 280152403 in words is "two hundred eighty million, one hundred fifty-two thousand, four hundred three".