1353221645431 has 2 divisors, whose sum is σ = 1353221645432. Its totient is φ = 1353221645430.

The previous prime is 1353221645387. The next prime is 1353221645453. The reversal of 1353221645431 is 1345461223531.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1353221645431 is a prime.

It is a super-2 number, since 2×1353221645431² (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 (1353221675431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 676610822715 + 676610822716.

It is an arithmetic number, because the mean of its divisors is an integer number (676610822716).

Almost surely, 2^{1353221645431} is an apocalyptic number.

1353221645431 is a deficient number, since it is larger than the sum of its proper divisors (1).

1353221645431 is an equidigital number, since it uses as much as digits as its factorization.

1353221645431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 259200, while the sum is 40.

Adding to 1353221645431 its reverse (1345461223531), we get a palindrome (2698682868962).

The spelling of 1353221645431 in words is "one trillion, three hundred fifty-three billion, two hundred twenty-one million, six hundred forty-five thousand, four hundred thirty-one".