281432923 has 2 divisors, whose sum is σ = 281432924. Its totient is φ = 281432922.

The previous prime is 281432887. The next prime is 281432927. The reversal of 281432923 is 329234182.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-281432923 is a prime.

It is not a weakly prime, because it can be changed into another prime (281432927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140716461 + 140716462.

It is an arithmetic number, because the mean of its divisors is an integer number (140716462).

Almost surely, 2^281432923 is an apocalyptic number.

281432923 is a deficient number, since it is larger than the sum of its proper divisors (1).

281432923 is an equidigital number, since it uses as much as digits as its factorization.

281432923 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20736, while the sum is 34.

The square root of 281432923 is about 16775.9626549417. The cubic root of 281432923 is about 655.3273603994.

The spelling of 281432923 in words is "two hundred eighty-one million, four hundred thirty-two thousand, nine hundred twenty-three".