130731000 has 64 divisors (see below), whose sum is σ = 407890080. Its totient is φ = 34860800.

The previous prime is 130730993. The next prime is 130731031. The reversal of 130731000 is 137031.

It is a super-2 number, since 2×130731000² = 34181188722000000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 18789 + ... + 24788.

Almost surely, 2^130731000 is an apocalyptic number.

130731000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

130731000 is an abundant number, since it is smaller than the sum of its proper divisors (277159080).

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

130731000 is a wasteful number, since it uses less digits than its factorization.

130731000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43601 (or 43587 counting only the distinct ones).

The product of its (nonzero) digits is 63, while the sum is 15.

The square root of 130731000 is about 11433.7657838527. The cubic root of 130731000 is about 507.5274399328.

Adding to 130731000 its reverse (137031), we get a palindrome (130868031).

The spelling of 130731000 in words is "one hundred thirty million, seven hundred thirty-one thousand".