281200231493 has 2 divisors, whose sum is σ = 281200231494. Its totient is φ = 281200231492.

The previous prime is 281200231421. The next prime is 281200231519. The reversal of 281200231493 is 394132002182.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 168020469409 + 113179762084 = 409903^2 + 336422^2 .

It is a cyclic number.

It is not a de Polignac number, because 281200231493 - 2¹⁶ = 281200165957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (281200201493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140600115746 + 140600115747.

It is an arithmetic number, because the mean of its divisors is an integer number (140600115747).

Almost surely, 2^281200231493 is an apocalyptic number.

It is an amenable number.

281200231493 is a deficient number, since it is larger than the sum of its proper divisors (1).

281200231493 is an equidigital number, since it uses as much as digits as its factorization.

281200231493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 35.

The spelling of 281200231493 in words is "two hundred eighty-one billion, two hundred million, two hundred thirty-one thousand, four hundred ninety-three".