31404060 has 36 divisors (see below), whose sum is σ = 95259528. Its totient is φ = 8374368.

The previous prime is 31404059. The next prime is 31404077. The reversal of 31404060 is 6040413.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 87054 + ... + 87413.

It is an arithmetic number, because the mean of its divisors is an integer number (2646098).

Almost surely, 2^31404060 is an apocalyptic number.

31404060 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31404060 is an abundant number, since it is smaller than the sum of its proper divisors (63855468).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31404060 is a wasteful number, since it uses less digits than its factorization.

31404060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174482 (or 174477 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 31404060 is about 5603.9325477739. The cubic root of 31404060 is about 315.4970233703.

Adding to 31404060 its reverse (6040413), we get a palindrome (37444473).

The spelling of 31404060 in words is "thirty-one million, four hundred four thousand, sixty".