21314531403 has 48 divisors (see below), whose sum is σ = 34856640000. Its totient is φ = 12908198880.

The previous prime is 21314531401. The next prime is 21314531419. The reversal of 21314531403 is 30413541312.

It is a happy number.

21314531403 is a `hidden beast` number, since 213 + 1 + 45 + 3 + 1 + 403 = 666.

It is not a de Polignac number, because 21314531403 - 2¹ = 21314531401 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (21314531401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5341333 + ... + 5345321.

It is an arithmetic number, because the mean of its divisors is an integer number (726180000).

Almost surely, 2^21314531403 is an apocalyptic number.

21314531403 is a deficient number, since it is larger than the sum of its proper divisors (13542108597).

21314531403 is a wasteful number, since it uses less digits than its factorization.

21314531403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6014 (or 6002 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

Subtracting 21314531403 from its reverse (30413541312), we obtain a palindrome (9099009909).

The spelling of 21314531403 in words is "twenty-one billion, three hundred fourteen million, five hundred thirty-one thousand, four hundred three".