1131301223 has 32 divisors (see below), whose sum is σ = 1293364800. Its totient is φ = 982195200.

The previous prime is 1131301219. The next prime is 1131301243. The reversal of 1131301223 is 3221031311.

It is not a de Polignac number, because 1131301223 - 2² = 1131301219 is a prime.

It is a super-2 number, since 2×1131301223² = 2559684914322591458, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131301243) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4025843 + ... + 4026123.

It is an arithmetic number, because the mean of its divisors is an integer number (40417650).

Almost surely, 2^1131301223 is an apocalyptic number.

1131301223 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1131301223 is a deficient number, since it is larger than the sum of its proper divisors (162063577).

1131301223 is a wasteful number, since it uses less digits than its factorization.

1131301223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 563.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 1131301223 is about 33634.8215841856. The cubic root of 1131301223 is about 1041.9800858383.

Adding to 1131301223 its reverse (3221031311), we get a palindrome (4352332534).

The spelling of 1131301223 in words is "one billion, one hundred thirty-one million, three hundred one thousand, two hundred twenty-three".