1331455404 has 12 divisors (see below), whose sum is σ = 3106729304. Its totient is φ = 443818464.

The previous prime is 1331455399. The next prime is 1331455421. The reversal of 1331455404 is 4045541331.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55477297 + ... + 55477320.

Almost surely, 2^1331455404 is an apocalyptic number.

It is an amenable number.

1331455404 is an abundant number, since it is smaller than the sum of its proper divisors (1775273900).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1331455404 is a wasteful number, since it uses less digits than its factorization.

1331455404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110954624 (or 110954622 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 1331455404 is about 36489.1134997824. The cubic root of 1331455404 is about 1100.1254413418.

Adding to 1331455404 its reverse (4045541331), we get a palindrome (5376996735).

The spelling of 1331455404 in words is "one billion, three hundred thirty-one million, four hundred fifty-five thousand, four hundred four".