11631405242 has 8 divisors (see below), whose sum is σ = 17447888916. Its totient is φ = 5815442272.

The previous prime is 11631405241. The next prime is 11631405257. The reversal of 11631405242 is 24250413611.

It can be written as a sum of positive squares in 2 ways, for example, as 11210786161 + 420619081 = 105881^2 + 20509^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (11631405241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68483 + ... + 167190.

Almost surely, 2^11631405242 is an apocalyptic number.

11631405242 is a deficient number, since it is larger than the sum of its proper divisors (5816483674).

11631405242 is a wasteful number, since it uses less digits than its factorization.

11631405242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260352.

The product of its (nonzero) digits is 5760, while the sum is 29.

Adding to 11631405242 its reverse (24250413611), we get a palindrome (35881818853).

The spelling of 11631405242 in words is "eleven billion, six hundred thirty-one million, four hundred five thousand, two hundred forty-two".