42303311 has 2 divisors, whose sum is σ = 42303312. Its totient is φ = 42303310.

The previous prime is 42303307. The next prime is 42303341. The reversal of 42303311 is 11330324.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42303311 - 2² = 42303307 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42303311.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42303301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21151655 + 21151656.

It is an arithmetic number, because the mean of its divisors is an integer number (21151656).

Almost surely, 2^42303311 is an apocalyptic number.

42303311 is a deficient number, since it is larger than the sum of its proper divisors (1).

42303311 is an equidigital number, since it uses as much as digits as its factorization.

42303311 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 42303311 is about 6504.0995533586. The cubic root of 42303311 is about 348.4374178755.

Adding to 42303311 its reverse (11330324), we get a palindrome (53633635).

The spelling of 42303311 in words is "forty-two million, three hundred three thousand, three hundred eleven".