42703231 has 2 divisors, whose sum is σ = 42703232. Its totient is φ = 42703230.

The previous prime is 42703189. The next prime is 42703237. The reversal of 42703231 is 13230724.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42703231 - 2¹³ = 42695039 is a prime.

It is a super-2 number, since 2×42703231² = 3647131875678722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42703237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21351615 + 21351616.

It is an arithmetic number, because the mean of its divisors is an integer number (21351616).

Almost surely, 2^42703231 is an apocalyptic number.

42703231 is a deficient number, since it is larger than the sum of its proper divisors (1).

42703231 is an equidigital number, since it uses as much as digits as its factorization.

42703231 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 42703231 is about 6534.7709217692. The cubic root of 42703231 is about 349.5319757919.

Adding to 42703231 its reverse (13230724), we get a palindrome (55933955).

The spelling of 42703231 in words is "forty-two million, seven hundred three thousand, two hundred thirty-one".