1201131 has 12 divisors (see below), whose sum is σ = 1782352. Its totient is φ = 778896.

The previous prime is 1201117. The next prime is 1201141. The reversal of 1201131 is 1311021.

It is not a de Polignac number, because 1201131 - 2⁷ = 1201003 is a prime.

It is a super-2 number, since 2×1201131² = 2885431358322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1201111) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1471 + ... + 2136.

2^1201131 is an apocalyptic number.

1201131 is a deficient number, since it is larger than the sum of its proper divisors (581221).

1201131 is a wasteful number, since it uses less digits than its factorization.

1201131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3650 (or 3647 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

The square root of 1201131 is about 1095.9612219417. The cubic root of 1201131 is about 106.2992316253.

Adding to 1201131 its reverse (1311021), we get a palindrome (2512152).

The spelling of 1201131 in words is "one million, two hundred one thousand, one hundred thirty-one".