31004401 has 8 divisors (see below), whose sum is σ = 31709664. Its totient is φ = 30307200.

The previous prime is 31004387. The next prime is 31004423. The reversal of 31004401 is 10440013.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31004401 - 2¹³ = 30996209 is a prime.

It is a super-2 number, since 2×31004401² = 1922545762737602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31004431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6126 + ... + 9976.

It is an arithmetic number, because the mean of its divisors is an integer number (3963708).

Almost surely, 2^31004401 is an apocalyptic number.

It is an amenable number.

31004401 is a deficient number, since it is larger than the sum of its proper divisors (705263).

31004401 is an equidigital number, since it uses as much as digits as its factorization.

31004401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4031.

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

The square root of 31004401 is about 5568.1595702710. The cubic root of 31004401 is about 314.1529303596.

Adding to 31004401 its reverse (10440013), we get a palindrome (41444414).

The spelling of 31004401 in words is "thirty-one million, four thousand, four hundred one".