11503423234 has 4 divisors (see below), whose sum is σ = 17255134854. Its totient is φ = 5751711616.

The previous prime is 11503423223. The next prime is 11503423271. The reversal of 11503423234 is 43232430511.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43232430511 = 563 ⋅76789397.

It can be written as a sum of positive squares in only one way, i.e., 9990602209 + 1512821025 = 99953^2 + 38895^2 .

It is a super-2 number, since 2×11503423234² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2875855807 + ... + 2875855810.

Almost surely, 2^11503423234 is an apocalyptic number.

11503423234 is a deficient number, since it is larger than the sum of its proper divisors (5751711620).

11503423234 is an equidigital number, since it uses as much as digits as its factorization.

11503423234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5751711619.

The product of its (nonzero) digits is 8640, while the sum is 28.

Adding to 11503423234 its reverse (43232430511), we get a palindrome (54735853745).

The spelling of 11503423234 in words is "eleven billion, five hundred three million, four hundred twenty-three thousand, two hundred thirty-four".