30672222731 has 2 divisors, whose sum is σ = 30672222732. Its totient is φ = 30672222730.

The previous prime is 30672222719. The next prime is 30672222733. The reversal of 30672222731 is 13722227603.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30672222731 is a prime.

It is a super-2 number, since 2×30672222731² (a number of 22 digits) contains 22 as substring.

Together with 30672222733, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 30672222691 and 30672222700.

It is not a weakly prime, because it can be changed into another prime (30672222733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15336111365 + 15336111366.

It is an arithmetic number, because the mean of its divisors is an integer number (15336111366).

Almost surely, 2^30672222731 is an apocalyptic number.

30672222731 is a deficient number, since it is larger than the sum of its proper divisors (1).

30672222731 is an equidigital number, since it uses as much as digits as its factorization.

30672222731 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42336, while the sum is 35.

The spelling of 30672222731 in words is "thirty billion, six hundred seventy-two million, two hundred twenty-two thousand, seven hundred thirty-one".