1299131 has 4 divisors (see below), whose sum is σ = 1308000. Its totient is φ = 1290264.

The previous prime is 1299101. The next prime is 1299143. The reversal of 1299131 is 1319921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1319921 = 313 ⋅4217.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1299131 is a prime.

It is a super-2 number, since 2×1299131² = 3375482710322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1299131.

It is not an unprimeable number, because it can be changed into a prime (1299101) 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 in 3 ways as a sum of consecutive naturals, for example, 4211 + ... + 4508.

It is an arithmetic number, because the mean of its divisors is an integer number (327000).

2^1299131 is an apocalyptic number.

1299131 is a deficient number, since it is larger than the sum of its proper divisors (8869).

1299131 is an equidigital number, since it uses as much as digits as its factorization.

1299131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8868.

The product of its digits is 486, while the sum is 26.

The square root of 1299131 is about 1139.7942796838. The cubic root of 1299131 is about 109.1149644133.

The spelling of 1299131 in words is "one million, two hundred ninety-nine thousand, one hundred thirty-one".