12199531 has 2 divisors, whose sum is σ = 12199532. Its totient is φ = 12199530.

The previous prime is 12199519. The next prime is 12199543. The reversal of 12199531 is 13599121.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (12199519) and next prime (12199543).

It is a cyclic number.

It is not a de Polignac number, because 12199531 - 2⁷ = 12199403 is a prime.

It is a super-2 number, since 2×12199531² = 297657113239922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12199493 and 12199502.

It is not a weakly prime, because it can be changed into another prime (12199571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6099765 + 6099766.

It is an arithmetic number, because the mean of its divisors is an integer number (6099766).

Almost surely, 2^12199531 is an apocalyptic number.

12199531 is a deficient number, since it is larger than the sum of its proper divisors (1).

12199531 is an equidigital number, since it uses as much as digits as its factorization.

12199531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2430, while the sum is 31.

The square root of 12199531 is about 3492.7827015147. The cubic root of 12199531 is about 230.2048018286.

The spelling of 12199531 in words is "twelve million, one hundred ninety-nine thousand, five hundred thirty-one".