20231404 has 6 divisors (see below), whose sum is σ = 35404964. Its totient is φ = 10115700.

The previous prime is 20231401. The next prime is 20231417. The reversal of 20231404 is 40413202.

It is a super-2 number, since 2×20231404² = 818619415622432, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20231401) by changing a digit.

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 as a sum of consecutive naturals, namely, 2528922 + ... + 2528929.

Almost surely, 2^20231404 is an apocalyptic number.

It is an amenable number.

20231404 is a deficient number, since it is larger than the sum of its proper divisors (15173560).

20231404 is a wasteful number, since it uses less digits than its factorization.

20231404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5057855 (or 5057853 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 20231404 is about 4497.9333031960. The cubic root of 20231404 is about 272.4846283729.

Adding to 20231404 its reverse (40413202), we get a palindrome (60644606).

The spelling of 20231404 in words is "twenty million, two hundred thirty-one thousand, four hundred four".