1531147061 has 8 divisors (see below), whose sum is σ = 1574651904. Its totient is φ = 1487754000.

The previous prime is 1531147049. The next prime is 1531147081. The reversal of 1531147061 is 1607411351.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1531147061 - 2¹⁰ = 1531146037 is a prime.

It is a super-2 number, since 2×1531147061² = 4688822644817875442, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1531147001) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 236 + ... + 55338.

It is an arithmetic number, because the mean of its divisors is an integer number (196831488).

Almost surely, 2^1531147061 is an apocalyptic number.

It is an amenable number.

1531147061 is a deficient number, since it is larger than the sum of its proper divisors (43504843).

1531147061 is an equidigital number, since it uses as much as digits as its factorization.

1531147061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55891.

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 1531147061 is about 39129.8742778456. The cubic root of 1531147061 is about 1152.5832442072.

The spelling of 1531147061 in words is "one billion, five hundred thirty-one million, one hundred forty-seven thousand, sixty-one".