281283893397 has 24 divisors (see below), whose sum is σ = 440172829824. Its totient is φ = 172061254944.

The previous prime is 281283893369. The next prime is 281283893413. The reversal of 281283893397 is 793398382182.

281283893397 is a `hidden beast` number, since 2 + 8 + 128 + 38 + 93 + 397 = 666.

It is not a de Polignac number, because 281283893397 - 2¹⁵ = 281283860629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (281283893327) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7178473 + ... + 7217550.

It is an arithmetic number, because the mean of its divisors is an integer number (18340534576).

Almost surely, 2^281283893397 is an apocalyptic number.

It is an amenable number.

281283893397 is a deficient number, since it is larger than the sum of its proper divisors (158888936427).

281283893397 is a wasteful number, since it uses less digits than its factorization.

281283893397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14396209 (or 14396206 counting only the distinct ones).

The product of its digits is 31352832, while the sum is 63.

The spelling of 281283893397 in words is "two hundred eighty-one billion, two hundred eighty-three million, eight hundred ninety-three thousand, three hundred ninety-seven".