280455023 has 2 divisors, whose sum is σ = 280455024. Its totient is φ = 280455022.

The previous prime is 280454983. The next prime is 280455053. The reversal of 280455023 is 320554082.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 280455023 - 2⁸ = 280454767 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (280455053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140227511 + 140227512.

It is an arithmetic number, because the mean of its divisors is an integer number (140227512).

Almost surely, 2^280455023 is an apocalyptic number.

280455023 is a deficient number, since it is larger than the sum of its proper divisors (1).

280455023 is an equidigital number, since it uses as much as digits as its factorization.

280455023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 280455023 is about 16746.7914240311. The cubic root of 280455023 is about 654.5674536734.

The spelling of 280455023 in words is "two hundred eighty million, four hundred fifty-five thousand, twenty-three".