101403 has 12 divisors (see below), whose sum is σ = 154440. Its totient is φ = 63936.

The previous prime is 101399. The next prime is 101411. The reversal of 101403 is 304101.

It is not a de Polignac number, because 101403 - 2² = 101399 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 101403.

It is not an unprimeable number, because it can be changed into a prime (101483) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 126 + ... + 467.

It is an arithmetic number, because the mean of its divisors is an integer number (12870).

2¹⁰¹⁴⁰³ is an apocalyptic number.

101403 is a deficient number, since it is larger than the sum of its proper divisors (53037).

101403 is a wasteful number, since it uses less digits than its factorization.

101403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 618 (or 615 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 101403 is about 318.4383770842. The cubic root of 101403 is about 46.6319526417.

Adding to 101403 its reverse (304101), we get a palindrome (405504).

The spelling of 101403 in words is "one hundred one thousand, four hundred three", and thus it is an iban number.