31404103 has 4 divisors (see below), whose sum is σ = 31416280. Its totient is φ = 31391928.

The previous prime is 31404101. The next prime is 31404119. The reversal of 31404103 is 30140413.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 31404103 - 2¹ = 31404101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31404101) 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, 525 + ... + 7942.

It is an arithmetic number, because the mean of its divisors is an integer number (7854070).

Almost surely, 2^31404103 is an apocalyptic number.

31404103 is a deficient number, since it is larger than the sum of its proper divisors (12177).

31404103 is an equidigital number, since it uses as much as digits as its factorization.

31404103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12176.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 31404103 is about 5603.9363843641. The cubic root of 31404103 is about 315.4971673683.

Adding to 31404103 its reverse (30140413), we get a palindrome (61544516).

It can be divided in two parts, 3140410 and 3, that added together give a palindrome (3140413).

The spelling of 31404103 in words is "thirty-one million, four hundred four thousand, one hundred three".