33148231 has 2 divisors, whose sum is σ = 33148232. Its totient is φ = 33148230.

The previous prime is 33148229. The next prime is 33148243. The reversal of 33148231 is 13284133.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 33148231 - 2¹ = 33148229 is a prime.

It is a super-2 number, since 2×33148231² = 2197610436858722, which contains 22 as substring.

Together with 33148229, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 33148196 and 33148205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33148201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16574115 + 16574116.

It is an arithmetic number, because the mean of its divisors is an integer number (16574116).

Almost surely, 2^33148231 is an apocalyptic number.

33148231 is a deficient number, since it is larger than the sum of its proper divisors (1).

33148231 is an equidigital number, since it uses as much as digits as its factorization.

33148231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1728, while the sum is 25.

The square root of 33148231 is about 5757.4500432049. The cubic root of 33148231 is about 321.2329743131.

The spelling of 33148231 in words is "thirty-three million, one hundred forty-eight thousand, two hundred thirty-one".