42311433 has 4 divisors (see below), whose sum is σ = 56415248. Its totient is φ = 28207620.

The previous prime is 42311431. The next prime is 42311443. The reversal of 42311433 is 33411324.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 42311433 - 2¹ = 42311431 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42311431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7051903 + ... + 7051908.

It is an arithmetic number, because the mean of its divisors is an integer number (14103812).

Almost surely, 2^42311433 is an apocalyptic number.

It is an amenable number.

42311433 is a deficient number, since it is larger than the sum of its proper divisors (14103815).

42311433 is a wasteful number, since it uses less digits than its factorization.

42311433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14103814.

The product of its digits is 864, while the sum is 21.

The square root of 42311433 is about 6504.7238988292. The cubic root of 42311433 is about 348.4597157962.

Adding to 42311433 its reverse (33411324), we get a palindrome (75722757).

The spelling of 42311433 in words is "forty-two million, three hundred eleven thousand, four hundred thirty-three".