280875131 has 2 divisors, whose sum is σ = 280875132. Its totient is φ = 280875130.

The previous prime is 280875109. The next prime is 280875151. The reversal of 280875131 is 131578082.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-280875131 is a prime.

It is a super-2 number, since 2×280875131² = 157781678428534322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 280875091 and 280875100.

It is not a weakly prime, because it can be changed into another prime (280875151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140437565 + 140437566.

It is an arithmetic number, because the mean of its divisors is an integer number (140437566).

Almost surely, 2^280875131 is an apocalyptic number.

280875131 is a deficient number, since it is larger than the sum of its proper divisors (1).

280875131 is an equidigital number, since it uses as much as digits as its factorization.

280875131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13440, while the sum is 35.

The square root of 280875131 is about 16759.3296703657. The cubic root of 280875131 is about 654.8941273628.

The spelling of 280875131 in words is "two hundred eighty million, eight hundred seventy-five thousand, one hundred thirty-one".