11531612104 has 32 divisors (see below), whose sum is σ = 22213262520. Its totient is φ = 5608175616.

The previous prime is 11531612089. The next prime is 11531612119. The reversal of 11531612104 is 40121613511.

It is an interprime number because it is at equal distance from previous prime (11531612089) and next prime (11531612119).

It can be written as a sum of positive squares in 4 ways, for example, as 11513719204 + 17892900 = 107302^2 + 4230^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1806262 + ... + 1812634.

Almost surely, 2^11531612104 is an apocalyptic number.

It is an amenable number.

11531612104 is a deficient number, since it is larger than the sum of its proper divisors (10681650416).

11531612104 is a wasteful number, since it uses less digits than its factorization.

11531612104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12529 (or 12525 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 25.

The spelling of 11531612104 in words is "eleven billion, five hundred thirty-one million, six hundred twelve thousand, one hundred four".