1205131 has 8 divisors (see below), whose sum is σ = 1269504. Its totient is φ = 1141800.

The previous prime is 1205123. The next prime is 1205159. The reversal of 1205131 is 1315021.

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 1205131 - 2³ = 1205123 is a prime.

It is a super-2 number, since 2×1205131² = 2904681454322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1205101) 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, 3300 + ... + 3646.

It is an arithmetic number, because the mean of its divisors is an integer number (158688).

2^1205131 is an apocalyptic number.

1205131 is a deficient number, since it is larger than the sum of its proper divisors (64373).

1205131 is a wasteful number, since it uses less digits than its factorization.

1205131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521.

The product of its (nonzero) digits is 30, while the sum is 13.

The square root of 1205131 is about 1097.7845872483. The cubic root of 1205131 is about 106.4170999238.

The spelling of 1205131 in words is "one million, two hundred five thousand, one hundred thirty-one".