1205105114531 has 2 divisors, whose sum is σ = 1205105114532. Its totient is φ = 1205105114530.

The previous prime is 1205105114467. The next prime is 1205105114617. The reversal of 1205105114531 is 1354115015021.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1205105114531 - 2⁶ = 1205105114467 is a prime.

It is a super-2 number, since 2×1205105114531² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1205105114494 and 1205105114503.

It is not a weakly prime, because it can be changed into another prime (1205105114831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 602552557265 + 602552557266.

It is an arithmetic number, because the mean of its divisors is an integer number (602552557266).

Almost surely, 2^{1205105114531} is an apocalyptic number.

1205105114531 is a deficient number, since it is larger than the sum of its proper divisors (1).

1205105114531 is an equidigital number, since it uses as much as digits as its factorization.

1205105114531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3000, while the sum is 29.

The spelling of 1205105114531 in words is "one trillion, two hundred five billion, one hundred five million, one hundred fourteen thousand, five hundred thirty-one".