281140120713 has 4 divisors (see below), whose sum is σ = 374853494288. Its totient is φ = 187426747140.

The previous prime is 281140120693. The next prime is 281140120769. The reversal of 281140120713 is 317021041182.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-281140120713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (281140120813) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46856686783 + ... + 46856686788.

It is an arithmetic number, because the mean of its divisors is an integer number (93713373572).

Almost surely, 2^281140120713 is an apocalyptic number.

It is an amenable number.

281140120713 is a deficient number, since it is larger than the sum of its proper divisors (93713373575).

281140120713 is an equidigital number, since it uses as much as digits as its factorization.

281140120713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93713373574.

The product of its (nonzero) digits is 2688, while the sum is 30.

Adding to 281140120713 its reverse (317021041182), we get a palindrome (598161161895).

The spelling of 281140120713 in words is "two hundred eighty-one billion, one hundred forty million, one hundred twenty thousand, seven hundred thirteen".