280435323 has 16 divisors (see below), whose sum is σ = 436423680. Its totient is φ = 156838656.

The previous prime is 280435313. The next prime is 280435327. The reversal of 280435323 is 323534082.

It is not a de Polignac number, because 280435323 - 2¹⁷ = 280304251 is a prime.

It is a super-2 number, since 2×280435323² = 157287940772228658, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (280435327) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 141078 + ... + 143051.

It is an arithmetic number, because the mean of its divisors is an integer number (27276480).

Almost surely, 2^280435323 is an apocalyptic number.

280435323 is a deficient number, since it is larger than the sum of its proper divisors (155988357).

280435323 is a wasteful number, since it uses less digits than its factorization.

280435323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284186.

The product of its (nonzero) digits is 17280, while the sum is 30.

The square root of 280435323 is about 16746.2032413320. The cubic root of 280435323 is about 654.5521270556.

The spelling of 280435323 in words is "two hundred eighty million, four hundred thirty-five thousand, three hundred twenty-three".