30303670381 has 4 divisors (see below), whose sum is σ = 30616079452. Its totient is φ = 29991261312.

The previous prime is 30303670373. The next prime is 30303670387. The reversal of 30303670381 is 18307630303.

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 12523848100 + 17779822281 = 111910^2 + 133341^2 .

It is a cyclic number.

It is not a de Polignac number, because 30303670381 - 2³ = 30303670373 is a prime.

It is a super-2 number, since 2×30303670381² (a number of 22 digits) contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30303670387) 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, 156204390 + ... + 156204583.

It is an arithmetic number, because the mean of its divisors is an integer number (7654019863).

Almost surely, 2^30303670381 is an apocalyptic number.

It is an amenable number.

30303670381 is a deficient number, since it is larger than the sum of its proper divisors (312409071).

30303670381 is an equidigital number, since it uses as much as digits as its factorization.

30303670381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312409070.

The product of its (nonzero) digits is 27216, while the sum is 34.

The spelling of 30303670381 in words is "thirty billion, three hundred three million, six hundred seventy thousand, three hundred eighty-one".