11031156328 has 8 divisors (see below), whose sum is σ = 20683418130. Its totient is φ = 5515578160.

The previous prime is 11031156239. The next prime is 11031156341. The reversal of 11031156328 is 82365113011.

It can be written as a sum of positive squares in only one way, i.e., 10786484164 + 244672164 = 103858^2 + 15642^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 11031156328.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 689447263 + ... + 689447278.

Almost surely, 2^11031156328 is an apocalyptic number.

It is an amenable number.

11031156328 is a deficient number, since it is larger than the sum of its proper divisors (9652261802).

11031156328 is a wasteful number, since it uses less digits than its factorization.

11031156328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1378894547 (or 1378894543 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 31.

Adding to 11031156328 its reverse (82365113011), we get a palindrome (93396269339).

The spelling of 11031156328 in words is "eleven billion, thirty-one million, one hundred fifty-six thousand, three hundred twenty-eight".