1660411031 has 4 divisors (see below), whose sum is σ = 1660546032. Its totient is φ = 1660276032.

The previous prime is 1660411021. The next prime is 1660411043. The reversal of 1660411031 is 1301140661.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1660411031 - 2¹⁰ = 1660410007 is a prime.

It is a super-2 number, since 2×1660411031² = 5513929583732965922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1660410988 and 1660411006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1660411021) 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, 46970 + ... + 74343.

It is an arithmetic number, because the mean of its divisors is an integer number (415136508).

Almost surely, 2^1660411031 is an apocalyptic number.

1660411031 is a deficient number, since it is larger than the sum of its proper divisors (135001).

1660411031 is a wasteful number, since it uses less digits than its factorization.

1660411031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135000.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 1660411031 is about 40748.1414422793. The cubic root of 1660411031 is about 1184.1458664848.

Adding to 1660411031 its reverse (1301140661), we get a palindrome (2961551692).

The spelling of 1660411031 in words is "one billion, six hundred sixty million, four hundred eleven thousand, thirty-one".