31343404 has 12 divisors (see below), whose sum is σ = 55670104. Its totient is φ = 15437664.

The previous prime is 31343401. The next prime is 31343413. The reversal of 31343404 is 40434313.

It is a pancake number, because a pancake can be divided into 31343404 parts by 7917 straight cuts.

It is not an unprimeable number, because it can be changed into a prime (31343401) 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 in 3 ways as a sum of consecutive naturals, for example, 58209 + ... + 58744.

Almost surely, 2^31343404 is an apocalyptic number.

It is an amenable number.

31343404 is a deficient number, since it is larger than the sum of its proper divisors (24326700).

31343404 is a wasteful number, since it uses less digits than its factorization.

31343404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117024 (or 117022 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 31343404 is about 5598.5180181902. The cubic root of 31343404 is about 315.2937681076.

Adding to 31343404 its reverse (40434313), we get a palindrome (71777717).

Subtracting 31343404 from its reverse (40434313), we obtain a palindrome (9090909).

The spelling of 31343404 in words is "thirty-one million, three hundred forty-three thousand, four hundred four".