22312003 has 12 divisors (see below), whose sum is σ = 26062680. Its totient is φ = 19045152.

The previous prime is 22311997. The next prime is 22312009. The reversal of 22312003 is 30021322.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (22311997) and next prime (22312009).

It is not a de Polignac number, because 22312003 - 2¹³ = 22303811 is a prime.

It is a super-3 number, since 3×22312003³ (a number of 23 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (22312009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13063 + ... + 14671.

It is an arithmetic number, because the mean of its divisors is an integer number (2171890).

Almost surely, 2^22312003 is an apocalyptic number.

22312003 is a deficient number, since it is larger than the sum of its proper divisors (3750677).

22312003 is a wasteful number, since it uses less digits than its factorization.

22312003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1906 (or 1899 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 22312003 is about 4723.5582985711. The cubic root of 22312003 is about 281.5223332199.

Adding to 22312003 its reverse (30021322), we get a palindrome (52333325).

The spelling of 22312003 in words is "twenty-two million, three hundred twelve thousand, three".