1231434 has 36 divisors (see below), whose sum is σ = 2805426. Its totient is φ = 390096.

The previous prime is 1231423. The next prime is 1231453. The reversal of 1231434 is 4341321.

1231434 is a `hidden beast` number, since 1 + 231 + 434 = 666.

It can be written as a sum of positive squares in only one way, i.e., 815409 + 416025 = 903^2 + 645^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 28617 + ... + 28659.

2^1231434 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1231434, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1402713).

1231434 is an abundant number, since it is smaller than the sum of its proper divisors (1573992).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1231434 is a wasteful number, since it uses less digits than its factorization.

1231434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131 (or 85 counting only the distinct ones).

The product of its digits is 288, while the sum is 18.

The square root of 1231434 is about 1109.6999594485. The cubic root of 1231434 is about 107.1857489224.

Adding to 1231434 its reverse (4341321), we get a palindrome (5572755).

The spelling of 1231434 in words is "one million, two hundred thirty-one thousand, four hundred thirty-four".