1965131 has 8 divisors (see below), whose sum is σ = 2264064. Its totient is φ = 1670760.

The previous prime is 1965109. The next prime is 1965133. The reversal of 1965131 is 1315691.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1965131 - 2¹⁴ = 1948747 is a prime.

It is a super-2 number, since 2×1965131² = 7723479694322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1965131.

It is not an unprimeable number, because it can be changed into a prime (1965133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 155 + ... + 1988.

It is an arithmetic number, because the mean of its divisors is an integer number (283008).

2^1965131 is an apocalyptic number.

1965131 is a deficient number, since it is larger than the sum of its proper divisors (298933).

1965131 is a wasteful number, since it uses less digits than its factorization.

1965131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2281.

The product of its digits is 810, while the sum is 26.

The square root of 1965131 is about 1401.8313022614. The cubic root of 1965131 is about 125.2556049725.

The spelling of 1965131 in words is "one million, nine hundred sixty-five thousand, one hundred thirty-one".