11970531 has 8 divisors (see below), whose sum is σ = 17734160. Its totient is φ = 7980336.

The previous prime is 11970523. The next prime is 11970559. The reversal of 11970531 is 13507911.

It is a happy number.

It is not a de Polignac number, because 11970531 - 2³ = 11970523 is a prime.

It is a super-2 number, since 2×11970531² = 286587224843922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 443353 = 11970531 / (1 + 1 + 9 + 7 + 0 + 5 + 3 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11970495 and 11970504.

It is not an unprimeable number, because it can be changed into a prime (11970521) 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, 221650 + ... + 221703.

It is an arithmetic number, because the mean of its divisors is an integer number (2216770).

Almost surely, 2^11970531 is an apocalyptic number.

11970531 is a deficient number, since it is larger than the sum of its proper divisors (5763629).

11970531 is an equidigital number, since it uses as much as digits as its factorization.

11970531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 443362 (or 443356 counting only the distinct ones).

The product of its (nonzero) digits is 945, while the sum is 27.

The square root of 11970531 is about 3459.8455167825. The cubic root of 11970531 is about 228.7552860912.

The spelling of 11970531 in words is "eleven million, nine hundred seventy thousand, five hundred thirty-one".