11512031249 has 2 divisors, whose sum is σ = 11512031250. Its totient is φ = 11512031248.

The previous prime is 11512031243. The next prime is 11512031269. The reversal of 11512031249 is 94213021511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10397473024 + 1114558225 = 101968^2 + 33385^2 .

It is a cyclic number.

It is not a de Polignac number, because 11512031249 - 2⁴ = 11512031233 is a prime.

It is not a weakly prime, because it can be changed into another prime (11512031243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5756015624 + 5756015625.

It is an arithmetic number, because the mean of its divisors is an integer number (5756015625).

Almost surely, 2^11512031249 is an apocalyptic number.

It is an amenable number.

11512031249 is a deficient number, since it is larger than the sum of its proper divisors (1).

11512031249 is an equidigital number, since it uses as much as digits as its factorization.

11512031249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 29.

The spelling of 11512031249 in words is "eleven billion, five hundred twelve million, thirty-one thousand, two hundred forty-nine".