1242314231 has 2 divisors, whose sum is σ = 1242314232. Its totient is φ = 1242314230.

The previous prime is 1242314197. The next prime is 1242314279. The reversal of 1242314231 is 1324132421.

It is a weak prime.

It is an emirp because it is prime and its reverse (1324132421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1242314231 - 2⁶ = 1242314167 is a prime.

It is a super-2 number, since 2×1242314231² = 3086689297090242722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1242314197 and 1242314206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1242314431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621157115 + 621157116.

It is an arithmetic number, because the mean of its divisors is an integer number (621157116).

Almost surely, 2^1242314231 is an apocalyptic number.

1242314231 is a deficient number, since it is larger than the sum of its proper divisors (1).

1242314231 is an equidigital number, since it uses as much as digits as its factorization.

1242314231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1152, while the sum is 23.

The square root of 1242314231 is about 35246.4782779784. The cubic root of 1242314231 is about 1075.0050062143.

Adding to 1242314231 its reverse (1324132421), we get a palindrome (2566446652).

The spelling of 1242314231 in words is "one billion, two hundred forty-two million, three hundred fourteen thousand, two hundred thirty-one".