11131330402 has 4 divisors (see below), whose sum is σ = 16696995606. Its totient is φ = 5565665200.

The previous prime is 11131330387. The next prime is 11131330411. The reversal of 11131330402 is 20403313111.

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., 8743933081 + 2387397321 = 93509^2 + 48861^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 11131330402.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2782832599 + ... + 2782832602.

Almost surely, 2^11131330402 is an apocalyptic number.

11131330402 is a deficient number, since it is larger than the sum of its proper divisors (5565665204).

11131330402 is an equidigital number, since it uses as much as digits as its factorization.

11131330402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5565665203.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 11131330402 its reverse (20403313111), we get a palindrome (31534643513).

The spelling of 11131330402 in words is "eleven billion, one hundred thirty-one million, three hundred thirty thousand, four hundred two".