1531140445 has 16 divisors (see below), whose sum is σ = 1960314048. Its totient is φ = 1144049920.

The previous prime is 1531140433. The next prime is 1531140451. The reversal of 1531140445 is 5440411351.

It is a de Polignac number, because none of the positive numbers 2^k-1531140445 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57619 + ... + 79888.

It is an arithmetic number, because the mean of its divisors is an integer number (122519628).

Almost surely, 2^1531140445 is an apocalyptic number.

It is an amenable number.

1531140445 is a deficient number, since it is larger than the sum of its proper divisors (429173603).

1531140445 is a wasteful number, since it uses less digits than its factorization.

1531140445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137660.

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 1531140445 is about 39129.7897387655. The cubic root of 1531140445 is about 1152.5815841224.

Adding to 1531140445 its reverse (5440411351), we get a palindrome (6971551796).

The spelling of 1531140445 in words is "one billion, five hundred thirty-one million, one hundred forty thousand, four hundred forty-five".