1121032311431 has 4 divisors (see below), whose sum is σ = 1186975388592. Its totient is φ = 1055089234272.

The previous prime is 1121032311403. The next prime is 1121032311461. The reversal of 1121032311431 is 1341132301211.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1121032311431 - 2³⁰ = 1119958569607 is a prime.

It is a super-2 number, since 2×1121032311431² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1121032311397 and 1121032311406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121032311461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32971538555 + ... + 32971538588.

It is an arithmetic number, because the mean of its divisors is an integer number (296743847148).

Almost surely, 2^{1121032311431} is an apocalyptic number.

1121032311431 is a deficient number, since it is larger than the sum of its proper divisors (65943077161).

1121032311431 is an equidigital number, since it uses as much as digits as its factorization.

1121032311431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65943077160.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 1121032311431 its reverse (1341132301211), we get a palindrome (2462164612642).

The spelling of 1121032311431 in words is "one trillion, one hundred twenty-one billion, thirty-two million, three hundred eleven thousand, four hundred thirty-one".