281137097 has 2 divisors, whose sum is σ = 281137098. Its totient is φ = 281137096.

The previous prime is 281137093. The next prime is 281137111. The reversal of 281137097 is 790731182.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 262569616 + 18567481 = 16204^2 + 4309^2 .

It is a cyclic number.

It is not a de Polignac number, because 281137097 - 2² = 281137093 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 281137097.

It is not a weakly prime, because it can be changed into another prime (281137093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140568548 + 140568549.

It is an arithmetic number, because the mean of its divisors is an integer number (140568549).

Almost surely, 2^281137097 is an apocalyptic number.

It is an amenable number.

281137097 is a deficient number, since it is larger than the sum of its proper divisors (1).

281137097 is an equidigital number, since it uses as much as digits as its factorization.

281137097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21168, while the sum is 38.

The square root of 281137097 is about 16767.1433762582. The cubic root of 281137097 is about 655.0976658359.

The spelling of 281137097 in words is "two hundred eighty-one million, one hundred thirty-seven thousand, ninety-seven".