2231534 has 4 divisors (see below), whose sum is σ = 3347304. Its totient is φ = 1115766.

The previous prime is 2231533. The next prime is 2231587. The reversal of 2231534 is 4351322.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4351322 = 2 ⋅2175661.

It is a super-3 number, since 3×2231534³ = 33337404096070143912, which contains 333 as substring.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2231533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 557882 + ... + 557885.

It is an arithmetic number, because the mean of its divisors is an integer number (836826).

2^2231534 is an apocalyptic number.

2231534 is a deficient number, since it is larger than the sum of its proper divisors (1115770).

2231534 is a wasteful number, since it uses less digits than its factorization.

2231534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1115769.

The product of its digits is 720, while the sum is 20.

The square root of 2231534 is about 1493.8319851978. The cubic root of 2231534 is about 130.6776059262.

Adding to 2231534 its reverse (4351322), we get a palindrome (6582856).

The spelling of 2231534 in words is "two million, two hundred thirty-one thousand, five hundred thirty-four".