231103427 has 2 divisors, whose sum is σ = 231103428. Its totient is φ = 231103426.

The previous prime is 231103421. The next prime is 231103459. The reversal of 231103427 is 724301132.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231103427 is a prime.

It is a super-2 number, since 2×231103427² = 106817587942288658, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (231103421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115551713 + 115551714.

It is an arithmetic number, because the mean of its divisors is an integer number (115551714).

Almost surely, 2^231103427 is an apocalyptic number.

231103427 is a deficient number, since it is larger than the sum of its proper divisors (1).

231103427 is an equidigital number, since it uses as much as digits as its factorization.

231103427 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 231103427 is about 15202.0862712984. The cubic root of 231103427 is about 613.6708041273.

Adding to 231103427 its reverse (724301132), we get a palindrome (955404559).

The spelling of 231103427 in words is "two hundred thirty-one million, one hundred three thousand, four hundred twenty-seven".