30996571901 has 4 divisors (see below), whose sum is σ = 31003016892. Its totient is φ = 30990126912.

The previous prime is 30996571891. The next prime is 30996571913. The reversal of 30996571901 is 10917569903.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18056371876 + 12940200025 = 134374^2 + 113755^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30996571901 is a prime.

It is a super-2 number, since 2×30996571901² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30996571901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30996571951) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3215276 + ... + 3224901.

It is an arithmetic number, because the mean of its divisors is an integer number (7750754223).

Almost surely, 2^30996571901 is an apocalyptic number.

It is an amenable number.

30996571901 is a deficient number, since it is larger than the sum of its proper divisors (6444991).

30996571901 is an equidigital number, since it uses as much as digits as its factorization.

30996571901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6444990.

The product of its (nonzero) digits is 459270, while the sum is 50.

The spelling of 30996571901 in words is "thirty billion, nine hundred ninety-six million, five hundred seventy-one thousand, nine hundred one".