281540050031 has 2 divisors, whose sum is σ = 281540050032. Its totient is φ = 281540050030.

The previous prime is 281540050027. The next prime is 281540050037. The reversal of 281540050031 is 130050045182.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 281540050031 - 2² = 281540050027 is a prime.

It is a super-2 number, since 2×281540050031² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 281540049976 and 281540050003.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (281540050037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140770025015 + 140770025016.

It is an arithmetic number, because the mean of its divisors is an integer number (140770025016).

Almost surely, 2^281540050031 is an apocalyptic number.

281540050031 is a deficient number, since it is larger than the sum of its proper divisors (1).

281540050031 is an equidigital number, since it uses as much as digits as its factorization.

281540050031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4800, while the sum is 29.

The spelling of 281540050031 in words is "two hundred eighty-one billion, five hundred forty million, fifty thousand, thirty-one".