1531340434 has 12 divisors (see below), whose sum is σ = 2487296106. Its totient is φ = 706772352.

The previous prime is 1531340431. The next prime is 1531340443. The reversal of 1531340434 is 4340431351.

It can be written as a sum of positive squares in 3 ways, for example, as 1285007409 + 246333025 = 35847^2 + 15695^2 .

It is not an unprimeable number, because it can be changed into a prime (1531340431) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2264959 + ... + 2265634.

Almost surely, 2^1531340434 is an apocalyptic number.

1531340434 is a deficient number, since it is larger than the sum of its proper divisors (955955672).

1531340434 is a wasteful number, since it uses less digits than its factorization.

1531340434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4530621 (or 4530608 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 1531340434 is about 39132.3451124514. The cubic root of 1531340434 is about 1152.6317631908.

Adding to 1531340434 its reverse (4340431351), we get a palindrome (5871771785).

The spelling of 1531340434 in words is "one billion, five hundred thirty-one million, three hundred forty thousand, four hundred thirty-four".