11198207231 has 2 divisors, whose sum is σ = 11198207232. Its totient is φ = 11198207230.

The previous prime is 11198207219. The next prime is 11198207269. The reversal of 11198207231 is 13270289111.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11198207231 is a prime.

It is a super-2 number, since 2×11198207231² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11198207191 and 11198207200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11198207201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5599103615 + 5599103616.

It is an arithmetic number, because the mean of its divisors is an integer number (5599103616).

Almost surely, 2^11198207231 is an apocalyptic number.

11198207231 is a deficient number, since it is larger than the sum of its proper divisors (1).

11198207231 is an equidigital number, since it uses as much as digits as its factorization.

11198207231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 35.

The spelling of 11198207231 in words is "eleven billion, one hundred ninety-eight million, two hundred seven thousand, two hundred thirty-one".