12299531 has 2 divisors, whose sum is σ = 12299532. Its totient is φ = 12299530.

The previous prime is 12299527. The next prime is 12299557. The reversal of 12299531 is 13599221.

It is a weak prime.

It is an emirp because it is prime and its reverse (13599221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12299531 - 2² = 12299527 is a prime.

It is a super-2 number, since 2×12299531² = 302556925639922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12299501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6149765 + 6149766.

It is an arithmetic number, because the mean of its divisors is an integer number (6149766).

Almost surely, 2^12299531 is an apocalyptic number.

12299531 is a deficient number, since it is larger than the sum of its proper divisors (1).

12299531 is an equidigital number, since it uses as much as digits as its factorization.

12299531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4860, while the sum is 32.

The square root of 12299531 is about 3507.0687190302. The cubic root of 12299531 is about 230.8320900187.

The spelling of 12299531 in words is "twelve million, two hundred ninety-nine thousand, five hundred thirty-one".