1131222523 has 8 divisors (see below), whose sum is σ = 1149715440. Its totient is φ = 1112872800.

The previous prime is 1131222487. The next prime is 1131222577. The reversal of 1131222523 is 3252221311.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1131222523 - 2⁹ = 1131222011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1131222494 and 1131222503.

It is not an unprimeable number, because it can be changed into a prime (1131222583) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19813 + ... + 51526.

It is an arithmetic number, because the mean of its divisors is an integer number (143714430).

Almost surely, 2^1131222523 is an apocalyptic number.

1131222523 is a deficient number, since it is larger than the sum of its proper divisors (18492917).

1131222523 is a wasteful number, since it uses less digits than its factorization.

1131222523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71597.

The product of its digits is 720, while the sum is 22.

The square root of 1131222523 is about 33633.6516453388. The cubic root of 1131222523 is about 1041.9559231801.

Adding to 1131222523 its reverse (3252221311), we get a palindrome (4383443834).

The spelling of 1131222523 in words is "one billion, one hundred thirty-one million, two hundred twenty-two thousand, five hundred twenty-three".