30531416456421 has 48 divisors (see below), whose sum is σ = 45184065298944. Its totient is φ = 19855588529952.

The previous prime is 30531416456393. The next prime is 30531416456447. The reversal of 30531416456421 is 12465461413503.

30531416456421 is a `hidden beast` number, since 3 + 0 + 5 + 3 + 1 + 4 + 1 + 64 + 564 + 21 = 666.

It is not a de Polignac number, because 30531416456421 - 2¹³ = 30531416448229 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30531416456921) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2240502210 + ... + 2240515836.

It is an arithmetic number, because the mean of its divisors is an integer number (941334693728).

Almost surely, 2^{30531416456421} is an apocalyptic number.

It is an amenable number.

30531416456421 is a deficient number, since it is larger than the sum of its proper divisors (14652648842523).

30531416456421 is a wasteful number, since it uses less digits than its factorization.

30531416456421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20630 (or 20627 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 45.

Adding to 30531416456421 its reverse (12465461413503), we get a palindrome (42996877869924).

The spelling of 30531416456421 in words is "thirty trillion, five hundred thirty-one billion, four hundred sixteen million, four hundred fifty-six thousand, four hundred twenty-one".