1153401312 has 144 divisors (see below), whose sum is σ = 3676337280. Its totient is φ = 310106112.

The previous prime is 1153401247. The next prime is 1153401331. The reversal of 1153401312 is 2131043511.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 191239 + ... + 197177.

It is an arithmetic number, because the mean of its divisors is an integer number (25530120).

Almost surely, 2^1153401312 is an apocalyptic number.

1153401312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1153401312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1838168640).

1153401312 is an abundant number, since it is smaller than the sum of its proper divisors (2522935968).

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

1153401312 is a wasteful number, since it uses less digits than its factorization.

1153401312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5993 (or 5968 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 1153401312 is about 33961.7624984334. The cubic root of 1153401312 is about 1048.7214405867.

Adding to 1153401312 its reverse (2131043511), we get a palindrome (3284444823).

The spelling of 1153401312 in words is "one billion, one hundred fifty-three million, four hundred one thousand, three hundred twelve".