1121431113403 has 12 divisors (see below), whose sum is σ = 1140064609080. Its totient is φ = 1103059441152.

The previous prime is 1121431113389. The next prime is 1121431113409. The reversal of 1121431113403 is 3043111341211.

It is not a de Polignac number, because 1121431113403 - 2⁹ = 1121431112891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1121431113409) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1168063 + ... + 1899271.

It is an arithmetic number, because the mean of its divisors is an integer number (95005384090).

Almost surely, 2^{1121431113403} is an apocalyptic number.

1121431113403 is a deficient number, since it is larger than the sum of its proper divisors (18633495677).

1121431113403 is an frugal number, since it uses more digits than its factorization.

1121431113403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 731566 (or 731469 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

Adding to 1121431113403 its reverse (3043111341211), we get a palindrome (4164542454614).

The spelling of 1121431113403 in words is "one trillion, one hundred twenty-one billion, four hundred thirty-one million, one hundred thirteen thousand, four hundred three".