30723980671 has 2 divisors, whose sum is σ = 30723980672. Its totient is φ = 30723980670.

The previous prime is 30723980663. The next prime is 30723980717. The reversal of 30723980671 is 17608932703.

It is a happy number.

It is an a-pointer prime, because the next prime (30723980717) can be obtained adding 30723980671 to its sum of digits (46).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 30723980671 - 2³ = 30723980663 is a prime.

It is a super-2 number, since 2×30723980671² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30723980641) 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 as a sum of consecutive naturals, namely, 15361990335 + 15361990336.

It is an arithmetic number, because the mean of its divisors is an integer number (15361990336).

Almost surely, 2^30723980671 is an apocalyptic number.

30723980671 is a deficient number, since it is larger than the sum of its proper divisors (1).

30723980671 is an equidigital number, since it uses as much as digits as its factorization.

30723980671 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 381024, while the sum is 46.

The spelling of 30723980671 in words is "thirty billion, seven hundred twenty-three million, nine hundred eighty thousand, six hundred seventy-one".