33312401 has 16 divisors (see below), whose sum is σ = 36432000. Its totient is φ = 30336768.

The previous prime is 33312397. The next prime is 33312407. The reversal of 33312401 is 10421333.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 33312401 - 2² = 33312397 is a prime.

It is a super-2 number, since 2×33312401² = 2219432120769602, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 33312401.

It is not an unprimeable number, because it can be changed into a prime (33312407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 145355 + ... + 145583.

It is an arithmetic number, because the mean of its divisors is an integer number (2277000).

Almost surely, 2^33312401 is an apocalyptic number.

It is an amenable number.

33312401 is a deficient number, since it is larger than the sum of its proper divisors (3119599).

33312401 is a wasteful number, since it uses less digits than its factorization.

33312401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 33312401 is about 5771.6896139692. The cubic root of 33312401 is about 321.7624142768.

Adding to 33312401 its reverse (10421333), we get a palindrome (43733734).

The spelling of 33312401 in words is "thirty-three million, three hundred twelve thousand, four hundred one".