11231023012 has 18 divisors (see below), whose sum is σ = 21603477014. Its totient is φ = 5105010240.

The previous prime is 11231022931. The next prime is 11231023051. The reversal of 11231023012 is 21032013211.

It can be written as a sum of positive squares in only one way, i.e., 11183908516 + 47114496 = 105754^2 + 6864^2 .

It is a super-2 number, since 2×11231023012² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11601813 + ... + 11602780.

Almost surely, 2^11231023012 is an apocalyptic number.

It is an amenable number.

11231023012 is a deficient number, since it is larger than the sum of its proper divisors (10372454002).

11231023012 is a wasteful number, since it uses less digits than its factorization.

11231023012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23204619 (or 23204606 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 11231023012 its reverse (21032013211), we get a palindrome (32263036223).

The spelling of 11231023012 in words is "eleven billion, two hundred thirty-one million, twenty-three thousand, twelve".