281323134 has 24 divisors (see below), whose sum is σ = 611530920. Its totient is φ = 93467088.

The previous prime is 281323129. The next prime is 281323213. The reversal of 281323134 is 431323182.

It is a junction number, because it is equal to n+sod(n) for n = 281323098 and 281323107.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19929 + ... + 30980.

It is an arithmetic number, because the mean of its divisors is an integer number (25480455).

Almost surely, 2^281323134 is an apocalyptic number.

281323134 is an abundant number, since it is smaller than the sum of its proper divisors (330207786).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

281323134 is a wasteful number, since it uses less digits than its factorization.

281323134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51224 (or 51221 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 281323134 is about 16772.6901241274. The cubic root of 281323134 is about 655.2421333494.

The spelling of 281323134 in words is "two hundred eighty-one million, three hundred twenty-three thousand, one hundred thirty-four".