30461231 has 2 divisors, whose sum is σ = 30461232. Its totient is φ = 30461230.

The previous prime is 30461227. The next prime is 30461257. The reversal of 30461231 is 13216403.

It is a weak prime.

It is an emirp because it is prime and its reverse (13216403) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30461231 - 2² = 30461227 is a prime.

It is a super-2 number, since 2×30461231² = 1855773188070722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30461831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15230615 + 15230616.

It is an arithmetic number, because the mean of its divisors is an integer number (15230616).

Almost surely, 2^30461231 is an apocalyptic number.

30461231 is a deficient number, since it is larger than the sum of its proper divisors (1).

30461231 is an equidigital number, since it uses as much as digits as its factorization.

30461231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 30461231 is about 5519.1694121489. The cubic root of 30461231 is about 312.3075499859.

Adding to 30461231 its reverse (13216403), we get a palindrome (43677634).

The spelling of 30461231 in words is "thirty million, four hundred sixty-one thousand, two hundred thirty-one".