130143531 has 8 divisors (see below), whose sum is σ = 198313984. Its totient is φ = 74367720.

The previous prime is 130143523. The next prime is 130143571. The reversal of 130143531 is 135341031.

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

It is not a de Polignac number, because 130143531 - 2³ = 130143523 is a prime.

It is a super-2 number, since 2×130143531² = 33874677322295922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 6197311 = 130143531 / (1 + 3 + 0 + 1 + 4 + 3 + 5 + 3 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 130143498 and 130143507.

It is not an unprimeable number, because it can be changed into a prime (130143571) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3098635 + ... + 3098676.

It is an arithmetic number, because the mean of its divisors is an integer number (24789248).

Almost surely, 2^130143531 is an apocalyptic number.

130143531 is a deficient number, since it is larger than the sum of its proper divisors (68170453).

130143531 is an equidigital number, since it uses as much as digits as its factorization.

130143531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6197321.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 130143531 is about 11408.0467653319. The cubic root of 130143531 is about 506.7660689570.

Adding to 130143531 its reverse (135341031), we get a palindrome (265484562).

The spelling of 130143531 in words is "one hundred thirty million, one hundred forty-three thousand, five hundred thirty-one".