30403215401991 has 16 divisors (see below), whose sum is σ = 41094241519104. Its totient is φ = 19990517494464.

The previous prime is 30403215401981. The next prime is 30403215402031. The reversal of 30403215401991 is 19910451230403.

It is not a de Polignac number, because 30403215401991 - 2⁹ = 30403215401479 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30403215401981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4714240 + ... + 9112106.

It is an arithmetic number, because the mean of its divisors is an integer number (2568390094944).

Almost surely, 2^{30403215401991} is an apocalyptic number.

30403215401991 is a deficient number, since it is larger than the sum of its proper divisors (10691026117113).

30403215401991 is a wasteful number, since it uses less digits than its factorization.

30403215401991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4429510.

The product of its (nonzero) digits is 116640, while the sum is 42.

The spelling of 30403215401991 in words is "thirty trillion, four hundred three billion, two hundred fifteen million, four hundred one thousand, nine hundred ninety-one".