1663303412331 has 12 divisors (see below), whose sum is σ = 2620962952920. Its totient is φ = 1008062674080.

The previous prime is 1663303412293. The next prime is 1663303412333. The reversal of 1663303412331 is 1332143033661.

1663303412331 is a `hidden beast` number, since 1 + 6 + 6 + 3 + 303 + 4 + 12 + 331 = 666.

It is not a de Polignac number, because 1663303412331 - 2¹¹ = 1663303410283 is a prime.

It is a super-2 number, since 2×1663303412331² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1663303412333) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8400522186 + ... + 8400522383.

It is an arithmetic number, because the mean of its divisors is an integer number (218413579410).

Almost surely, 2^{1663303412331} is an apocalyptic number.

1663303412331 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1663303412331 is a deficient number, since it is larger than the sum of its proper divisors (957659540589).

1663303412331 is a wasteful number, since it uses less digits than its factorization.

1663303412331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16801044586 (or 16801044583 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 36.

Adding to 1663303412331 its reverse (1332143033661), we get a palindrome (2995446445992).

The spelling of 1663303412331 in words is "one trillion, six hundred sixty-three billion, three hundred three million, four hundred twelve thousand, three hundred thirty-one".