1321153350 has 192 divisors, whose sum is σ = 3853467648. Its totient is φ = 296208000.

The previous prime is 1321153333. The next prime is 1321153367. The reversal of 1321153350 is 533511231.

It is an interprime number because it is at equal distance from previous prime (1321153333) and next prime (1321153367).

It is a self number, because there is not a number n which added to its sum of digits gives 1321153350.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1175889 + ... + 1177011.

It is an arithmetic number, because the mean of its divisors is an integer number (20070144).

Almost surely, 2^1321153350 is an apocalyptic number.

1321153350 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1321153350, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1926733824).

1321153350 is an abundant number, since it is smaller than the sum of its proper divisors (2532314298).

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

1321153350 is a wasteful number, since it uses less digits than its factorization.

1321153350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1203 (or 1198 counting only the distinct ones).

The product of its (nonzero) digits is 1350, while the sum is 24.

The square root of 1321153350 is about 36347.6732405253. The cubic root of 1321153350 is about 1097.2807074619.

Adding to 1321153350 its reverse (533511231), we get a palindrome (1854664581).

The spelling of 1321153350 in words is "one billion, three hundred twenty-one million, one hundred fifty-three thousand, three hundred fifty".