42731203 has 2 divisors, whose sum is σ = 42731204. Its totient is φ = 42731202.

The previous prime is 42731201. The next prime is 42731219. The reversal of 42731203 is 30213724.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42731203 - 2¹ = 42731201 is a prime.

Together with 42731201, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (42731201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21365601 + 21365602.

It is an arithmetic number, because the mean of its divisors is an integer number (21365602).

Almost surely, 2^42731203 is an apocalyptic number.

42731203 is a deficient number, since it is larger than the sum of its proper divisors (1).

42731203 is an equidigital number, since it uses as much as digits as its factorization.

42731203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 22.

The square root of 42731203 is about 6536.9108147503. The cubic root of 42731203 is about 349.6082773910.

Adding to 42731203 its reverse (30213724), we get a palindrome (72944927).

It can be divided in two parts, 4273 and 1203, that added together give a square (5476 = 74²).

The spelling of 42731203 in words is "forty-two million, seven hundred thirty-one thousand, two hundred three".