1321232130 has 24 divisors (see below), whose sum is σ = 3435203772. Its totient is φ = 352328544.

The previous prime is 1321232119. The next prime is 1321232179. The reversal of 1321232130 is 312321231.

It can be written as a sum of positive squares in 2 ways, for example, as 1127549241 + 193682889 = 33579^2 + 13917^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7340089 + ... + 7340268.

Almost surely, 2^1321232130 is an apocalyptic number.

1321232130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1321232130 is an abundant number, since it is smaller than the sum of its proper divisors (2113971642).

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

1321232130 is a wasteful number, since it uses less digits than its factorization.

1321232130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14680370 (or 14680367 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 1321232130 is about 36348.7569250999. The cubic root of 1321232130 is about 1097.3025172076.

Adding to 1321232130 its reverse (312321231), we get a palindrome (1633553361).

The spelling of 1321232130 in words is "one billion, three hundred twenty-one million, two hundred thirty-two thousand, one hundred thirty".