1131103405142 has 4 divisors (see below), whose sum is σ = 1696655107716. Its totient is φ = 565551702570.

The previous prime is 1131103405141. The next prime is 1131103405169. The reversal of 1131103405142 is 2415043011311.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131103405141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 282775851284 + ... + 282775851287.

It is an arithmetic number, because the mean of its divisors is an integer number (424163776929).

Almost surely, 2^{1131103405142} is an apocalyptic number.

1131103405142 is a deficient number, since it is larger than the sum of its proper divisors (565551702574).

1131103405142 is an equidigital number, since it uses as much as digits as its factorization.

1131103405142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 565551702573.

The product of its (nonzero) digits is 1440, while the sum is 26.

Adding to 1131103405142 its reverse (2415043011311), we get a palindrome (3546146416453).

The spelling of 1131103405142 in words is "one trillion, one hundred thirty-one billion, one hundred three million, four hundred five thousand, one hundred forty-two".