1613131 has 4 divisors (see below), whose sum is σ = 1737232. Its totient is φ = 1489032.

The previous prime is 1613123. The next prime is 1613141. The reversal of 1613131 is 1313161.

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 1613131 - 2³ = 1613123 is a prime.

It is a super-2 number, since 2×1613131² = 5204383246322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1613141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62031 + ... + 62056.

It is an arithmetic number, because the mean of its divisors is an integer number (434308).

2^1613131 is an apocalyptic number.

1613131 is a deficient number, since it is larger than the sum of its proper divisors (124101).

1613131 is a wasteful number, since it uses less digits than its factorization.

1613131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124100.

The product of its digits is 54, while the sum is 16.

The square root of 1613131 is about 1270.0909416258. The cubic root of 1613131 is about 117.2797988463.

Adding to 1613131 its reverse (1313161), we get a palindrome (2926292).

The spelling of 1613131 in words is "one million, six hundred thirteen thousand, one hundred thirty-one".