1975231 has 8 divisors (see below), whose sum is σ = 2023424. Its totient is φ = 1927800.

The previous prime is 1975223. The next prime is 1975243. The reversal of 1975231 is 1325791.

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

It is a cyclic number.

It is not a de Polignac number, because 1975231 - 2³ = 1975223 is a prime.

It is a super-2 number, since 2×1975231² = 7803075006722, which contains 22 as substring.

It is a Duffinian number.

1975231 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1975231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1975201) 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, 13006 + ... + 13156.

It is an arithmetic number, because the mean of its divisors is an integer number (252928).

2^1975231 is an apocalyptic number.

1975231 is a deficient number, since it is larger than the sum of its proper divisors (48193).

1975231 is a wasteful number, since it uses less digits than its factorization.

1975231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381.

The product of its digits is 1890, while the sum is 28.

The square root of 1975231 is about 1405.4291159642. The cubic root of 1975231 is about 125.4698265583.

The spelling of 1975231 in words is "one million, nine hundred seventy-five thousand, two hundred thirty-one".