11512031269 has 2 divisors, whose sum is σ = 11512031270. Its totient is φ = 11512031268.

The previous prime is 11512031249. The next prime is 11512031281. The reversal of 11512031269 is 96213021511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8549406369 + 2962624900 = 92463^2 + 54430^2 .

It is a cyclic number.

It is not a de Polignac number, because 11512031269 - 2³³ = 2922096677 is a prime.

It is a super-2 number, since 2×11512031269² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11512031269.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11512031249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5756015634 + 5756015635.

It is an arithmetic number, because the mean of its divisors is an integer number (5756015635).

Almost surely, 2^11512031269 is an apocalyptic number.

It is an amenable number.

11512031269 is a deficient number, since it is larger than the sum of its proper divisors (1).

11512031269 is an equidigital number, since it uses as much as digits as its factorization.

11512031269 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 31.

The spelling of 11512031269 in words is "eleven billion, five hundred twelve million, thirty-one thousand, two hundred sixty-nine".