1331131123 has 8 divisors (see below), whose sum is σ = 1521531648. Its totient is φ = 1140790344.

The previous prime is 1331131111. The next prime is 1331131157. The reversal of 1331131123 is 3211311331.

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 1331131123 - 2¹⁷ = 1331000051 is a prime.

It is a super-2 number, since 2×1331131123² = 3543820133238482258, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1331131123.

It is not an unprimeable number, because it can be changed into a prime (1331131183) 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, 54090 + ... + 74752.

It is an arithmetic number, because the mean of its divisors is an integer number (190191456).

Almost surely, 2^1331131123 is an apocalyptic number.

1331131123 is a deficient number, since it is larger than the sum of its proper divisors (190400525).

1331131123 is an equidigital number, since it uses as much as digits as its factorization.

1331131123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29873.

The product of its digits is 162, while the sum is 19.

The square root of 1331131123 is about 36484.6696983815. The cubic root of 1331131123 is about 1100.0361208524.

Adding to 1331131123 its reverse (3211311331), we get a palindrome (4542442454).

The spelling of 1331131123 in words is "one billion, three hundred thirty-one million, one hundred thirty-one thousand, one hundred twenty-three".