1611131 has 2 divisors, whose sum is σ = 1611132. Its totient is φ = 1611130.

The previous prime is 1611097. The next prime is 1611139. The reversal of 1611131 is 1311161.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1611131 - 2¹⁰ = 1610107 is a prime.

It is a super-2 number, since 2×1611131² = 5191486198322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1611139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 805565 + 805566.

It is an arithmetic number, because the mean of its divisors is an integer number (805566).

2^1611131 is an apocalyptic number.

1611131 is a deficient number, since it is larger than the sum of its proper divisors (1).

1611131 is an equidigital number, since it uses as much as digits as its factorization.

1611131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18, while the sum is 14.

The square root of 1611131 is about 1269.3033522370. The cubic root of 1611131 is about 117.2313099961.

Adding to 1611131 its reverse (1311161), we get a palindrome (2922292).

The spelling of 1611131 in words is "one million, six hundred eleven thousand, one hundred thirty-one".