1242314431 has 2 divisors, whose sum is σ = 1242314432. Its totient is φ = 1242314430.

The previous prime is 1242314413. The next prime is 1242314461. The reversal of 1242314431 is 1344132421.

Together with previous prime (1242314413) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1242314431 - 2⁵ = 1242314399 is a prime.

It is a super-2 number, since 2×1242314431² = 3086690290941707522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1242314396 and 1242314405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1242314401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621157215 + 621157216.

It is an arithmetic number, because the mean of its divisors is an integer number (621157216).

Almost surely, 2^1242314431 is an apocalyptic number.

1242314431 is a deficient number, since it is larger than the sum of its proper divisors (1).

1242314431 is an equidigital number, since it uses as much as digits as its factorization.

1242314431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2304, while the sum is 25.

The square root of 1242314431 is about 35246.4811151411. The cubic root of 1242314431 is about 1075.0050639026.

Adding to 1242314431 its reverse (1344132421), we get a palindrome (2586446852).

The spelling of 1242314431 in words is "one billion, two hundred forty-two million, three hundred fourteen thousand, four hundred thirty-one".