11015101231 has 2 divisors, whose sum is σ = 11015101232. Its totient is φ = 11015101230.

The previous prime is 11015101187. The next prime is 11015101267. The reversal of 11015101231 is 13210151011.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11015101231 - 2¹³ = 11015093039 is a prime.

It is a super-2 number, since 2×11015101231² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11015101271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5507550615 + 5507550616.

It is an arithmetic number, because the mean of its divisors is an integer number (5507550616).

Almost surely, 2^11015101231 is an apocalyptic number.

11015101231 is a deficient number, since it is larger than the sum of its proper divisors (1).

11015101231 is an equidigital number, since it uses as much as digits as its factorization.

11015101231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30, while the sum is 16.

Adding to 11015101231 its reverse (13210151011), we get a palindrome (24225252242).

The spelling of 11015101231 in words is "eleven billion, fifteen million, one hundred one thousand, two hundred thirty-one".