131430620 has 24 divisors (see below), whose sum is σ = 276318000. Its totient is φ = 52512512.

The previous prime is 131430601. The next prime is 131430643. The reversal of 131430620 is 26034131.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 131430592 and 131430601.

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 7 ways as a sum of consecutive naturals, for example, 17156 + ... + 23604.

It is an arithmetic number, because the mean of its divisors is an integer number (11513250).

Almost surely, 2^131430620 is an apocalyptic number.

131430620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131430620 is an abundant number, since it is smaller than the sum of its proper divisors (144887380).

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

131430620 is a wasteful number, since it uses less digits than its factorization.

131430620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7477 (or 7475 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 131430620 is about 11464.3194303020. The cubic root of 131430620 is about 508.4311909309.

Adding to 131430620 its reverse (26034131), we get a palindrome (157464751).

The spelling of 131430620 in words is "one hundred thirty-one million, four hundred thirty thousand, six hundred twenty".