1223201431 has 2 divisors, whose sum is σ = 1223201432. Its totient is φ = 1223201430.

The previous prime is 1223201429. The next prime is 1223201443. The reversal of 1223201431 is 1341023221.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1223201431 - 2¹ = 1223201429 is a prime.

It is a super-2 number, since 2×1223201431² = 2992443481600895522, which contains 22 as substring.

Together with 1223201429, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 1223201399 and 1223201408.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1223201471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611600715 + 611600716.

It is an arithmetic number, because the mean of its divisors is an integer number (611600716).

Almost surely, 2^1223201431 is an apocalyptic number.

1223201431 is a deficient number, since it is larger than the sum of its proper divisors (1).

1223201431 is an equidigital number, since it uses as much as digits as its factorization.

1223201431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1223201431 is about 34974.2967191622. The cubic root of 1223201431 is about 1069.4635652131.

Adding to 1223201431 its reverse (1341023221), we get a palindrome (2564224652).

The spelling of 1223201431 in words is "one billion, two hundred twenty-three million, two hundred one thousand, four hundred thirty-one".