11531074028 has 12 divisors (see below), whose sum is σ = 20671559832. Its totient is φ = 5624914080.

The previous prime is 11531074021. The next prime is 11531074097. The reversal of 11531074028 is 82047013511.

It is a super-2 number, since 2×11531074028² (a number of 21 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 11531073985 and 11531074003.

It is not an unprimeable number, because it can be changed into a prime (11531074021) 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, 35155550 + ... + 35155877.

It is an arithmetic number, because the mean of its divisors is an integer number (1722629986).

Almost surely, 2^11531074028 is an apocalyptic number.

It is an amenable number.

11531074028 is a deficient number, since it is larger than the sum of its proper divisors (9140485804).

11531074028 is a wasteful number, since it uses less digits than its factorization.

11531074028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70311472 (or 70311470 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 32.

Adding to 11531074028 its reverse (82047013511), we get a palindrome (93578087539).

The spelling of 11531074028 in words is "eleven billion, five hundred thirty-one million, seventy-four thousand, twenty-eight".