31404411 has 12 divisors (see below), whose sum is σ = 45601920. Its totient is φ = 20825520.

The previous prime is 31404403. The next prime is 31404427. The reversal of 31404411 is 11440413.

It is not a de Polignac number, because 31404411 - 2³ = 31404403 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31404431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7416 + ... + 10853.

It is an arithmetic number, because the mean of its divisors is an integer number (3800160).

Almost surely, 2^31404411 is an apocalyptic number.

31404411 is a deficient number, since it is larger than the sum of its proper divisors (14197509).

31404411 is a wasteful number, since it uses less digits than its factorization.

31404411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18466 (or 18463 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 31404411 is about 5603.9638649799. The cubic root of 31404411 is about 315.4981987920.

Adding to 31404411 its reverse (11440413), we get a palindrome (42844824).

The spelling of 31404411 in words is "thirty-one million, four hundred four thousand, four hundred eleven".