1313552226431 has 2 divisors, whose sum is σ = 1313552226432. Its totient is φ = 1313552226430.

The previous prime is 1313552226407. The next prime is 1313552226449. The reversal of 1313552226431 is 1346222553131.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1313552226431 is a prime.

It is a super-2 number, since 2×1313552226431² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1313552226031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656776113215 + 656776113216.

It is an arithmetic number, because the mean of its divisors is an integer number (656776113216).

Almost surely, 2^{1313552226431} is an apocalyptic number.

1313552226431 is a deficient number, since it is larger than the sum of its proper divisors (1).

1313552226431 is an equidigital number, since it uses as much as digits as its factorization.

1313552226431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 129600, while the sum is 38.

Adding to 1313552226431 its reverse (1346222553131), we get a palindrome (2659774779562).

The spelling of 1313552226431 in words is "one trillion, three hundred thirteen billion, five hundred fifty-two million, two hundred twenty-six thousand, four hundred thirty-one".