1200131 has 4 divisors (see below), whose sum is σ = 1203552. Its totient is φ = 1196712.

The previous prime is 1200109. The next prime is 1200139. The reversal of 1200131 is 1310021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1310021 = 71 ⋅18451.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1200131 is a prime.

It is a super-2 number, since 2×1200131² = 2880628834322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1200139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1115 + ... + 1908.

It is an arithmetic number, because the mean of its divisors is an integer number (300888).

2^1200131 is an apocalyptic number.

1200131 is a deficient number, since it is larger than the sum of its proper divisors (3421).

1200131 is an equidigital number, since it uses as much as digits as its factorization.

1200131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3420.

The product of its (nonzero) digits is 6, while the sum is 8.

The square root of 1200131 is about 1095.5049064244. The cubic root of 1200131 is about 106.2697236740.

Adding to 1200131 its reverse (1310021), we get a palindrome (2510152).

It can be divided in two parts, 1200 and 131, that added together give a palindrome (1331).

The spelling of 1200131 in words is "one million, two hundred thousand, one hundred thirty-one".