13070231 has 2 divisors, whose sum is σ = 13070232. Its totient is φ = 13070230.

The previous prime is 13070221. The next prime is 13070243. The reversal of 13070231 is 13207031.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13070231 is a prime.

It is a super-2 number, since 2×13070231² = 341661876786722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13070221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6535115 + 6535116.

It is an arithmetic number, because the mean of its divisors is an integer number (6535116).

Almost surely, 2^13070231 is an apocalyptic number.

13070231 is a deficient number, since it is larger than the sum of its proper divisors (1).

13070231 is an equidigital number, since it uses as much as digits as its factorization.

13070231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 126, while the sum is 17.

The square root of 13070231 is about 3615.2774444017. The cubic root of 13070231 is about 235.5561356917.

Adding to 13070231 its reverse (13207031), we get a palindrome (26277262).

The spelling of 13070231 in words is "thirteen million, seventy thousand, two hundred thirty-one".