245315531211 has 4 divisors (see below), whose sum is σ = 327087374952. Its totient is φ = 163543687472.

The previous prime is 245315531207. The next prime is 245315531257. The reversal of 245315531211 is 112135513542.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 245315531211 - 2² = 245315531207 is a prime.

It is not an unprimeable number, because it can be changed into a prime (245315521211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40885921866 + ... + 40885921871.

It is an arithmetic number, because the mean of its divisors is an integer number (81771843738).

Almost surely, 2^245315531211 is an apocalyptic number.

245315531211 is a deficient number, since it is larger than the sum of its proper divisors (81771843741).

245315531211 is an equidigital number, since it uses as much as digits as its factorization.

245315531211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81771843740.

The product of its digits is 18000, while the sum is 33.

The spelling of 245315531211 in words is "two hundred forty-five billion, three hundred fifteen million, five hundred thirty-one thousand, two hundred eleven".