281000053381 has 8 divisors (see below), whose sum is σ = 290660201984. Its totient is φ = 271377131760.

The previous prime is 281000053363. The next prime is 281000053387. The reversal of 281000053381 is 183350000182.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 281000053381 - 2¹³ = 281000045189 is a prime.

It is a super-2 number, since 2×281000053381² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (281000053387) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9291390 + ... + 9321583.

It is an arithmetic number, because the mean of its divisors is an integer number (36332525248).

Almost surely, 2^281000053381 is an apocalyptic number.

It is an amenable number.

281000053381 is a deficient number, since it is larger than the sum of its proper divisors (9660148603).

281000053381 is a wasteful number, since it uses less digits than its factorization.

281000053381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18613491.

The product of its (nonzero) digits is 5760, while the sum is 31.

The spelling of 281000053381 in words is "two hundred eighty-one billion, fifty-three thousand, three hundred eighty-one".