1150431115123 has 4 divisors (see below), whose sum is σ = 1187541796288. Its totient is φ = 1113320433960.

The previous prime is 1150431115111. The next prime is 1150431115189. The reversal of 1150431115123 is 3215111340511.

It is a happy number.

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-1150431115123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1150431115091 and 1150431115100.

It is not an unprimeable number, because it can be changed into a prime (1150431115193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18555340536 + ... + 18555340597.

It is an arithmetic number, because the mean of its divisors is an integer number (296885449072).

Almost surely, 2^{1150431115123} is an apocalyptic number.

1150431115123 is a deficient number, since it is larger than the sum of its proper divisors (37110681165).

1150431115123 is an equidigital number, since it uses as much as digits as its factorization.

1150431115123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37110681164.

The product of its (nonzero) digits is 1800, while the sum is 28.

Adding to 1150431115123 its reverse (3215111340511), we get a palindrome (4365542455634).

The spelling of 1150431115123 in words is "one trillion, one hundred fifty billion, four hundred thirty-one million, one hundred fifteen thousand, one hundred twenty-three".