1305242511231 has 8 divisors (see below), whose sum is σ = 1740409020720. Its totient is φ = 870118837952.

The previous prime is 1305242511203. The next prime is 1305242511259. The reversal of 1305242511231 is 1321152425031.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1305242511203) and next prime (1305242511259).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1305242511231 - 2¹⁰ = 1305242510207 is a prime.

It is a super-2 number, since 2×1305242511231² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1305242511271) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10637886 + ... + 10759883.

It is an arithmetic number, because the mean of its divisors is an integer number (217551127590).

Almost surely, 2^{1305242511231} is an apocalyptic number.

1305242511231 is a deficient number, since it is larger than the sum of its proper divisors (435166509489).

1305242511231 is a wasteful number, since it uses less digits than its factorization.

1305242511231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21418105.

The product of its (nonzero) digits is 7200, while the sum is 30.

Adding to 1305242511231 its reverse (1321152425031), we get a palindrome (2626394936262).

The spelling of 1305242511231 in words is "one trillion, three hundred five billion, two hundred forty-two million, five hundred eleven thousand, two hundred thirty-one".