200731130 has 16 divisors (see below), whose sum is σ = 364632840. Its totient is φ = 79555392.

The previous prime is 200731123. The next prime is 200731147. The reversal of 200731130 is 31137002.

It can be written as a sum of positive squares in 4 ways, for example, as 183250369 + 17480761 = 13537^2 + 4181^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 200731099 and 200731108.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90989 + ... + 93168.

Almost surely, 2^200731130 is an apocalyptic number.

200731130 is a deficient number, since it is larger than the sum of its proper divisors (163901710).

200731130 is a wasteful number, since it uses less digits than its factorization.

200731130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184273.

The product of its (nonzero) digits is 126, while the sum is 17.

The square root of 200731130 is about 14167.9613918164. The cubic root of 200731130 is about 585.5152934110.

Adding to 200731130 its reverse (31137002), we get a palindrome (231868132).

The spelling of 200731130 in words is "two hundred million, seven hundred thirty-one thousand, one hundred thirty".