101020003 has 4 divisors (see below), whose sum is σ = 115451440. Its totient is φ = 86588568.

The previous prime is 101019959. The next prime is 101020009. The reversal of 101020003 is 300020101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 300020101 = 127 ⋅2362363.

It is a cyclic number.

It is not a de Polignac number, because 101020003 - 2²¹ = 98922851 is a prime.

It is a super-2 number, since 2×101020003² = 20410082012240018, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (7), and also a Moran number because the ratio is a prime number: 14431429 = 101020003 / (1 + 0 + 1 + 0 + 2 + 0 + 0 + 0 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101020009) 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, 7215708 + ... + 7215721.

It is an arithmetic number, because the mean of its divisors is an integer number (28862860).

Almost surely, 2^101020003 is an apocalyptic number.

101020003 is a deficient number, since it is larger than the sum of its proper divisors (14431437).

101020003 is an equidigital number, since it uses as much as digits as its factorization.

101020003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14431436.

The product of its (nonzero) digits is 6, while the sum is 7.

The square root of 101020003 is about 10050.8707582975. The cubic root of 101020003 is about 465.7316926986.

Adding to 101020003 its reverse (300020101), we get a palindrome (401040104).

The spelling of 101020003 in words is "one hundred one million, twenty thousand, three".