11513531234 has 8 divisors (see below), whose sum is σ = 17270752620. Its totient is φ = 5756613696.

The previous prime is 11513531189. The next prime is 11513531257. The reversal of 11513531234 is 43213531511.

It can be written as a sum of positive squares in 2 ways, for example, as 9791696209 + 1721835025 = 98953^2 + 41495^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×11513531234² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11513531197 and 11513531206.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104822 + ... + 184430.

Almost surely, 2^11513531234 is an apocalyptic number.

11513531234 is a deficient number, since it is larger than the sum of its proper divisors (5757221386).

11513531234 is an equidigital number, since it uses as much as digits as its factorization.

11513531234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151924.

The product of its digits is 5400, while the sum is 29.

The spelling of 11513531234 in words is "eleven billion, five hundred thirteen million, five hundred thirty-one thousand, two hundred thirty-four".