1531317048 has 16 divisors (see below), whose sum is σ = 3828292680. Its totient is φ = 510439008.

The previous prime is 1531317043. The next prime is 1531317059. The reversal of 1531317048 is 8407131351.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1531317043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31902415 + ... + 31902462.

Almost surely, 2^1531317048 is an apocalyptic number.

It is an amenable number.

1531317048 is an abundant number, since it is smaller than the sum of its proper divisors (2296975632).

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

1531317048 is a wasteful number, since it uses less digits than its factorization.

1531317048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63804886 (or 63804882 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 1531317048 is about 39132.0463047871. The cubic root of 1531317048 is about 1152.6258956552.

Adding to 1531317048 its reverse (8407131351), we get a palindrome (9938448399).

The spelling of 1531317048 in words is "one billion, five hundred thirty-one million, three hundred seventeen thousand, forty-eight".