101012403 has 4 divisors (see below), whose sum is σ = 134683208. Its totient is φ = 67341600.

The previous prime is 101012399. The next prime is 101012407. The reversal of 101012403 is 304210101.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (101012399) and next prime (101012407).

It is not a de Polignac number, because 101012403 - 2² = 101012399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101012407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16835398 + ... + 16835403.

It is an arithmetic number, because the mean of its divisors is an integer number (33670802).

Almost surely, 2^101012403 is an apocalyptic number.

101012403 is a deficient number, since it is larger than the sum of its proper divisors (33670805).

101012403 is an equidigital number, since it uses as much as digits as its factorization.

101012403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33670804.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 101012403 is about 10050.4926744911. The cubic root of 101012403 is about 465.7200129998.

Adding to 101012403 its reverse (304210101), we get a palindrome (405222504).

The spelling of 101012403 in words is "one hundred one million, twelve thousand, four hundred three".