2131434 has 40 divisors (see below), whose sum is σ = 4878720. Its totient is φ = 695304.

The previous prime is 2131429. The next prime is 2131447. The reversal of 2131434 is 4341312.

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

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 9447 + ... + 9669.

It is an arithmetic number, because the mean of its divisors is an integer number (121968).

2^2131434 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2131434, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2439360).

2131434 is an abundant number, since it is smaller than the sum of its proper divisors (2747286).

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

2131434 is a wasteful number, since it uses less digits than its factorization.

2131434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296 (or 287 counting only the distinct ones).

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

The square root of 2131434 is about 1459.9431495781. The cubic root of 2131434 is about 128.6937027254.

Adding to 2131434 its reverse (4341312), we get a palindrome (6472746).

The spelling of 2131434 in words is "two million, one hundred thirty-one thousand, four hundred thirty-four".