30536731 has 2 divisors, whose sum is σ = 30536732. Its totient is φ = 30536730.

The previous prime is 30536711. The next prime is 30536809. The reversal of 30536731 is 13763503.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 30536731 - 2¹³ = 30528539 is a prime.

It is a super-2 number, since 2×30536731² = 1864983880332722, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30536731.

It is not a weakly prime, because it can be changed into another prime (30536711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15268365 + 15268366.

It is an arithmetic number, because the mean of its divisors is an integer number (15268366).

Almost surely, 2^30536731 is an apocalyptic number.

30536731 is a deficient number, since it is larger than the sum of its proper divisors (1).

30536731 is an equidigital number, since it uses as much as digits as its factorization.

30536731 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5670, while the sum is 28.

The square root of 30536731 is about 5526.0049764726. The cubic root of 30536731 is about 312.5653614749.

The spelling of 30536731 in words is "thirty million, five hundred thirty-six thousand, seven hundred thirty-one".