42311212003 has 4 divisors (see below), whose sum is σ = 42334423488. Its totient is φ = 42288000520.

The previous prime is 42311211977. The next prime is 42311212007. The reversal of 42311212003 is 30021211324.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42311212003 is a prime.

It is a super-2 number, since 2×42311212003² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42311212007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11603008 + ... + 11606653.

It is an arithmetic number, because the mean of its divisors is an integer number (10583605872).

Almost surely, 2^42311212003 is an apocalyptic number.

42311212003 is a deficient number, since it is larger than the sum of its proper divisors (23211485).

42311212003 is a wasteful number, since it uses less digits than its factorization.

42311212003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23211484.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 42311212003 its reverse (30021211324), we get a palindrome (72332423327).

The spelling of 42311212003 in words is "forty-two billion, three hundred eleven million, two hundred twelve thousand, three".