304781401 has 4 divisors (see below), whose sum is σ = 304850304. Its totient is φ = 304712500.

The previous prime is 304781371. The next prime is 304781419. The reversal of 304781401 is 104187403.

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, and also an emirpimes, since its reverse is a distinct semiprime: 104187403 = 541 ⋅192583.

It is a cyclic number.

It is not a de Polignac number, because 304781401 - 2⁵ = 304781369 is a prime.

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 304781401.

It is not an unprimeable number, because it can be changed into a prime (304781471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27325 + ... + 36826.

It is an arithmetic number, because the mean of its divisors is an integer number (76212576).

Almost surely, 2^304781401 is an apocalyptic number.

It is an amenable number.

304781401 is a deficient number, since it is larger than the sum of its proper divisors (68903).

304781401 is an equidigital number, since it uses as much as digits as its factorization.

304781401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68902.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 304781401 is about 17457.9896036170. The cubic root of 304781401 is about 672.9706961181.

It can be divided in two parts, 3047 and 81401, that added together give a palindrome (84448).

The spelling of 304781401 in words is "three hundred four million, seven hundred eighty-one thousand, four hundred one".