11501431042 has 4 divisors (see below), whose sum is σ = 17252146566. Its totient is φ = 5750715520.

The previous prime is 11501431033. The next prime is 11501431043. The reversal of 11501431042 is 24013410511.

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., 11380409041 + 121022001 = 106679^2 + 11001^2 .

It is not an unprimeable number, because it can be changed into a prime (11501431043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2875357759 + ... + 2875357762.

Almost surely, 2^11501431042 is an apocalyptic number.

11501431042 is a deficient number, since it is larger than the sum of its proper divisors (5750715524).

11501431042 is an equidigital number, since it uses as much as digits as its factorization.

11501431042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5750715523.

The product of its (nonzero) digits is 480, while the sum is 22.

Adding to 11501431042 its reverse (24013410511), we get a palindrome (35514841553).

The spelling of 11501431042 in words is "eleven billion, five hundred one million, four hundred thirty-one thousand, forty-two".