280551031 has 2 divisors, whose sum is σ = 280551032. Its totient is φ = 280551030.

The previous prime is 280550999. The next prime is 280551053. The reversal of 280551031 is 130155082.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 280551031 - 2⁵ = 280550999 is a prime.

It is a super-2 number, since 2×280551031² = 157417761990325922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 280550987 and 280551005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (280551071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140275515 + 140275516.

It is an arithmetic number, because the mean of its divisors is an integer number (140275516).

Almost surely, 2^280551031 is an apocalyptic number.

280551031 is a deficient number, since it is larger than the sum of its proper divisors (1).

280551031 is an equidigital number, since it uses as much as digits as its factorization.

280551031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 280551031 is about 16749.6576382922. The cubic root of 280551031 is about 654.6421377133.

The spelling of 280551031 in words is "two hundred eighty million, five hundred fifty-one thousand, thirty-one".