1213203130 has 16 divisors (see below), whose sum is σ = 2312222760. Its totient is φ = 456735232.

The previous prime is 1213203119. The next prime is 1213203163. The reversal of 1213203130 is 313023121.

It can be written as a sum of positive squares in 4 ways, for example, as 1187284849 + 25918281 = 34457^2 + 5091^2 .

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, 3568075 + ... + 3568414.

Almost surely, 2^1213203130 is an apocalyptic number.

1213203130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1213203130 is a deficient number, since it is larger than the sum of its proper divisors (1099019630).

1213203130 is a wasteful number, since it uses less digits than its factorization.

1213203130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7136513.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 1213203130 is about 34831.0655880638. The cubic root of 1213203130 is about 1066.5417009635.

Adding to 1213203130 its reverse (313023121), we get a palindrome (1526226251).

Subtracting from 1213203130 its reverse (313023121), we obtain a square (900180009 = 30003²).

The spelling of 1213203130 in words is "one billion, two hundred thirteen million, two hundred three thousand, one hundred thirty".