31404063 has 4 divisors (see below), whose sum is σ = 41872088. Its totient is φ = 20936040.

The previous prime is 31404059. The next prime is 31404077. The reversal of 31404063 is 36040413.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36040413 = 3 ⋅12013471.

It is not a de Polignac number, because 31404063 - 2² = 31404059 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 (31404463) 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, 5234008 + ... + 5234013.

It is an arithmetic number, because the mean of its divisors is an integer number (10468022).

Almost surely, 2^31404063 is an apocalyptic number.

31404063 is a deficient number, since it is larger than the sum of its proper divisors (10468025).

31404063 is a wasteful number, since it uses less digits than its factorization.

31404063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10468024.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 31404063 is about 5603.9328154431. The cubic root of 31404063 is about 315.4970334167.

Adding to 31404063 its reverse (36040413), we get a palindrome (67444476).

The spelling of 31404063 in words is "thirty-one million, four hundred four thousand, sixty-three".