31404001 has 4 divisors (see below), whose sum is σ = 31801600. Its totient is φ = 31006404.

The previous prime is 31403969. The next prime is 31404007. The reversal of 31404001 is 10040413.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 31404001 - 2⁵ = 31403969 is a prime.

It is a super-2 number, since 2×31404001² = 1972422557616002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31404007) 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 3 ways as a sum of consecutive naturals, for example, 198681 + ... + 198838.

It is an arithmetic number, because the mean of its divisors is an integer number (7950400).

Almost surely, 2^31404001 is an apocalyptic number.

It is an amenable number.

31404001 is a deficient number, since it is larger than the sum of its proper divisors (397599).

31404001 is an equidigital number, since it uses as much as digits as its factorization.

31404001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397598.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 31404001 is about 5603.9272836110. The cubic root of 31404001 is about 315.4968257915.

Adding to 31404001 its reverse (10040413), we get a palindrome (41444414).

The spelling of 31404001 in words is "thirty-one million, four hundred four thousand, one".