1445213311 has 2 divisors, whose sum is σ = 1445213312. Its totient is φ = 1445213310.

The previous prime is 1445213279. The next prime is 1445213389. The reversal of 1445213311 is 1133125441.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1445213311 - 2⁵ = 1445213279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1445213111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 722606655 + 722606656.

It is an arithmetic number, because the mean of its divisors is an integer number (722606656).

Almost surely, 2^1445213311 is an apocalyptic number.

1445213311 is a deficient number, since it is larger than the sum of its proper divisors (1).

1445213311 is an equidigital number, since it uses as much as digits as its factorization.

1445213311 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1440, while the sum is 25.

The square root of 1445213311 is about 38015.9612662892. The cubic root of 1445213311 is about 1130.6043471509.

Adding to 1445213311 its reverse (1133125441), we get a palindrome (2578338752).

The spelling of 1445213311 in words is "one billion, four hundred forty-five million, two hundred thirteen thousand, three hundred eleven".