1131012251 has 2 divisors, whose sum is σ = 1131012252. Its totient is φ = 1131012250.

The previous prime is 1131012191. The next prime is 1131012257. The reversal of 1131012251 is 1522101311.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1131012251 - 2¹⁴ = 1130995867 is a prime.

It is not a weakly prime, because it can be changed into another prime (1131012257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565506125 + 565506126.

It is an arithmetic number, because the mean of its divisors is an integer number (565506126).

Almost surely, 2^1131012251 is an apocalyptic number.

1131012251 is a deficient number, since it is larger than the sum of its proper divisors (1).

1131012251 is an equidigital number, since it uses as much as digits as its factorization.

1131012251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60, while the sum is 17.

The square root of 1131012251 is about 33630.5255831663. The cubic root of 1131012251 is about 1041.8913594808.

Adding to 1131012251 its reverse (1522101311), we get a palindrome (2653113562).

The spelling of 1131012251 in words is "one billion, one hundred thirty-one million, twelve thousand, two hundred fifty-one".