1121406731443 has 8 divisors (see below), whose sum is σ = 1166293695680. Its totient is φ = 1077287065920.

The previous prime is 1121406731441. The next prime is 1121406731503. The reversal of 1121406731443 is 3441376041211.

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 1121406731443 - 2¹ = 1121406731441 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1121406731441) 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, 191821698 + ... + 191827543.

It is an arithmetic number, because the mean of its divisors is an integer number (145786711960).

Almost surely, 2^{1121406731443} is an apocalyptic number.

1121406731443 is a deficient number, since it is larger than the sum of its proper divisors (44886964237).

1121406731443 is an equidigital number, since it uses as much as digits as its factorization.

1121406731443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383649357.

The product of its (nonzero) digits is 48384, while the sum is 37.

The spelling of 1121406731443 in words is "one trillion, one hundred twenty-one billion, four hundred six million, seven hundred thirty-one thousand, four hundred forty-three".