1011431103442 has 4 divisors (see below), whose sum is σ = 1517146655166. Its totient is φ = 505715551720.

The previous prime is 1011431103383. The next prime is 1011431103443. The reversal of 1011431103442 is 2443011341101.

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

It can be written as a sum of positive squares in only one way, i.e., 658225538721 + 353205564721 = 811311^2 + 594311^2 .

It is not an unprimeable number, because it can be changed into a prime (1011431103443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252857775859 + ... + 252857775862.

Almost surely, 2^{1011431103442} is an apocalyptic number.

1011431103442 is a deficient number, since it is larger than the sum of its proper divisors (505715551724).

1011431103442 is an equidigital number, since it uses as much as digits as its factorization.

1011431103442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505715551723.

The product of its (nonzero) digits is 1152, while the sum is 25.

Adding to 1011431103442 its reverse (2443011341101), we get a palindrome (3454442444543).

The spelling of 1011431103442 in words is "one trillion, eleven billion, four hundred thirty-one million, one hundred three thousand, four hundred forty-two".