1199390531 has 2 divisors, whose sum is σ = 1199390532. Its totient is φ = 1199390530.

The previous prime is 1199390459. The next prime is 1199390537. The reversal of 1199390531 is 1350939911.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1199390531 - 2¹⁰ = 1199389507 is a prime.

It is a super-2 number, since 2×1199390531² = 2877075291704923922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1199390537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 599695265 + 599695266.

It is an arithmetic number, because the mean of its divisors is an integer number (599695266).

Almost surely, 2^1199390531 is an apocalyptic number.

1199390531 is a deficient number, since it is larger than the sum of its proper divisors (1).

1199390531 is an equidigital number, since it uses as much as digits as its factorization.

1199390531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32805, while the sum is 41.

The square root of 1199390531 is about 34632.2181068438. The cubic root of 1199390531 is about 1062.4786338679.

The spelling of 1199390531 in words is "one billion, one hundred ninety-nine million, three hundred ninety thousand, five hundred thirty-one".