1445343131 has 2 divisors, whose sum is σ = 1445343132. Its totient is φ = 1445343130.

The previous prime is 1445343127. The next prime is 1445343139. The reversal of 1445343131 is 1313435441.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (1313435441) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1445343131 - 2² = 1445343127 is a prime.

It is a super-2 number, since 2×1445343131² = 4178033532657766322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1445343094 and 1445343103.

It is not a weakly prime, because it can be changed into another prime (1445343139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 722671565 + 722671566.

It is an arithmetic number, because the mean of its divisors is an integer number (722671566).

Almost surely, 2^1445343131 is an apocalyptic number.

1445343131 is a deficient number, since it is larger than the sum of its proper divisors (1).

1445343131 is an equidigital number, since it uses as much as digits as its factorization.

1445343131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 29.

The square root of 1445343131 is about 38017.6686686598. The cubic root of 1445343131 is about 1130.6381992844.

Adding to 1445343131 its reverse (1313435441), we get a palindrome (2758778572).

The spelling of 1445343131 in words is "one billion, four hundred forty-five million, three hundred forty-three thousand, one hundred thirty-one".