11630531 has 8 divisors (see below), whose sum is σ = 12750528. Its totient is φ = 10521000.

The previous prime is 11630503. The next prime is 11630623. The reversal of 11630531 is 13503611.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 11630531 - 2¹⁴ = 11614147 is a prime.

It is a super-2 number, since 2×11630531² = 270538502683922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11630501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 185 + ... + 4826.

It is an arithmetic number, because the mean of its divisors is an integer number (1593816).

Almost surely, 2^11630531 is an apocalyptic number.

11630531 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11630531 is a deficient number, since it is larger than the sum of its proper divisors (1119997).

11630531 is a wasteful number, since it uses less digits than its factorization.

11630531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5233.

The product of its (nonzero) digits is 270, while the sum is 20.

The square root of 11630531 is about 3410.3564329847. The cubic root of 11630531 is about 226.5686660644.

Subtracting 11630531 from its reverse (13503611), we obtain a triangular number (1873080 = T₁₉₃₅).

The spelling of 11630531 in words is "eleven million, six hundred thirty thousand, five hundred thirty-one".