1531147048 has 8 divisors (see below), whose sum is σ = 2870900730. Its totient is φ = 765573520.

The previous prime is 1531147039. The next prime is 1531147049. The reversal of 1531147048 is 8407411351.

It can be written as a sum of positive squares in only one way, i.e., 916999524 + 614147524 = 30282^2 + 24782^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×1531147048² = 4688822565198228608, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1531147049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95696683 + ... + 95696698.

Almost surely, 2^1531147048 is an apocalyptic number.

It is an amenable number.

1531147048 is a deficient number, since it is larger than the sum of its proper divisors (1339753682).

1531147048 is a wasteful number, since it uses less digits than its factorization.

1531147048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191393387 (or 191393383 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 1531147048 is about 39129.8741117321. The cubic root of 1531147048 is about 1152.5832409452.

Adding to 1531147048 its reverse (8407411351), we get a palindrome (9938558399).

The spelling of 1531147048 in words is "one billion, five hundred thirty-one million, one hundred forty-seven thousand, forty-eight".