1131250133231 has 4 divisors (see below), whose sum is σ = 1131365119200. Its totient is φ = 1131135147264.

The previous prime is 1131250133197. The next prime is 1131250133239. The reversal of 1131250133231 is 1323310521311.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1131250133231 is a prime.

It is a super-2 number, since 2×1131250133231² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1131250133231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131250133239) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57478226 + ... + 57497903.

It is an arithmetic number, because the mean of its divisors is an integer number (282841279800).

Almost surely, 2^{1131250133231} is an apocalyptic number.

1131250133231 is a deficient number, since it is larger than the sum of its proper divisors (114985969).

1131250133231 is an equidigital number, since it uses as much as digits as its factorization.

1131250133231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114985968.

The product of its (nonzero) digits is 1620, while the sum is 26.

Adding to 1131250133231 its reverse (1323310521311), we get a palindrome (2454560654542).

The spelling of 1131250133231 in words is "one trillion, one hundred thirty-one billion, two hundred fifty million, one hundred thirty-three thousand, two hundred thirty-one".