130031020 has 24 divisors (see below), whose sum is σ = 312074784. Its totient is φ = 44582016.

The previous prime is 130031017. The next prime is 130031023. The reversal of 130031020 is 20130031.

It is an interprime number because it is at equal distance from previous prime (130031017) and next prime (130031023).

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 130030988 and 130031006.

It is not an unprimeable number, because it can be changed into a prime (130031023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 464257 + ... + 464536.

It is an arithmetic number, because the mean of its divisors is an integer number (13003116).

Almost surely, 2^130031020 is an apocalyptic number.

130031020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

130031020 is an abundant number, since it is smaller than the sum of its proper divisors (182043764).

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

130031020 is a wasteful number, since it uses less digits than its factorization.

130031020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 928809 (or 928807 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 10.

The square root of 130031020 is about 11403.1144868409. The cubic root of 130031020 is about 506.6199912758.

Adding to 130031020 its reverse (20130031), we get a palindrome (150161051).

The spelling of 130031020 in words is "one hundred thirty million, thirty-one thousand, twenty".