1121310403 has 12 divisors (see below), whose sum is σ = 1188601128. Its totient is φ = 1057655520.

The previous prime is 1121310373. The next prime is 1121310409. The reversal of 1121310403 is 3040131211.

It is not a de Polignac number, because 1121310403 - 2⁵ = 1121310371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1121310409) 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, 77448 + ... + 90778.

It is an arithmetic number, because the mean of its divisors is an integer number (99050094).

Almost surely, 2^1121310403 is an apocalyptic number.

1121310403 is a deficient number, since it is larger than the sum of its proper divisors (67290725).

1121310403 is a wasteful number, since it uses less digits than its factorization.

1121310403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13602 (or 13583 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1121310403 is about 33485.9732276068. The cubic root of 1121310403 is about 1038.9036779836.

Adding to 1121310403 its reverse (3040131211), we get a palindrome (4161441614).

The spelling of 1121310403 in words is "one billion, one hundred twenty-one million, three hundred ten thousand, four hundred three".