31404014 has 4 divisors (see below), whose sum is σ = 47106024. Its totient is φ = 15702006.

The previous prime is 31404011. The next prime is 31404047. The reversal of 31404014 is 41040413.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 31403983 and 31404001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31404011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7851002 + ... + 7851005.

It is an arithmetic number, because the mean of its divisors is an integer number (11776506).

Almost surely, 2^31404014 is an apocalyptic number.

31404014 is a deficient number, since it is larger than the sum of its proper divisors (15702010).

31404014 is a wasteful number, since it uses less digits than its factorization.

31404014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15702009.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 31404014 is about 5603.9284435117. The cubic root of 31404014 is about 315.4968693258.

Adding to 31404014 its reverse (41040413), we get a palindrome (72444427).

The spelling of 31404014 in words is "thirty-one million, four hundred four thousand, fourteen".