1226361431 has 2 divisors, whose sum is σ = 1226361432. Its totient is φ = 1226361430.

The previous prime is 1226361421. The next prime is 1226361491. The reversal of 1226361431 is 1341636221.

It is a weak prime.

It is an emirp because it is prime and its reverse (1341636221) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1226361431 is a prime.

It is a super-2 number, since 2×1226361431² = 3007924718888735522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1226361394 and 1226361403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1226361421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 613180715 + 613180716.

It is an arithmetic number, because the mean of its divisors is an integer number (613180716).

Almost surely, 2^1226361431 is an apocalyptic number.

1226361431 is a deficient number, since it is larger than the sum of its proper divisors (1).

1226361431 is an equidigital number, since it uses as much as digits as its factorization.

1226361431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5184, while the sum is 29.

The square root of 1226361431 is about 35019.4436135128. The cubic root of 1226361431 is about 1070.3837186081.

Adding to 1226361431 its reverse (1341636221), we get a palindrome (2567997652).

The spelling of 1226361431 in words is "one billion, two hundred twenty-six million, three hundred sixty-one thousand, four hundred thirty-one".