1321231030 has 32 divisors (see below), whose sum is σ = 2742030144. Its totient is φ = 448982016.

The previous prime is 1321231003. The next prime is 1321231031. The reversal of 1321231030 is 301321231.

It is a junction number, because it is equal to n+sod(n) for n = 1321230995 and 1321231013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321231031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75607 + ... + 91426.

It is an arithmetic number, because the mean of its divisors is an integer number (85688442).

Almost surely, 2^1321231030 is an apocalyptic number.

1321231030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1321231030 is an abundant number, since it is smaller than the sum of its proper divisors (1420799114).

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

1321231030 is a wasteful number, since it uses less digits than its factorization.

1321231030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167160.

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

The square root of 1321231030 is about 36348.7417939053. The cubic root of 1321231030 is about 1097.3022126856.

Adding to 1321231030 its reverse (301321231), we get a palindrome (1622552261).

The spelling of 1321231030 in words is "one billion, three hundred twenty-one million, two hundred thirty-one thousand, thirty".