1156335312 has 80 divisors (see below), whose sum is σ = 3307502592. Its totient is φ = 345164160.

The previous prime is 1156335311. The next prime is 1156335319. The reversal of 1156335312 is 2135336511.

It is a super-2 number, since 2×1156335312² = 2674222707556274688, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1156335312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1156335311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19033 + ... + 51719.

Almost surely, 2^1156335312 is an apocalyptic number.

1156335312 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 1156335312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1653751296).

1156335312 is an abundant number, since it is smaller than the sum of its proper divisors (2151167280).

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

1156335312 is a wasteful number, since it uses less digits than its factorization.

1156335312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32776 (or 32770 counting only the distinct ones).

The product of its digits is 8100, while the sum is 30.

The square root of 1156335312 is about 34004.9307012968. The cubic root of 1156335312 is about 1049.6099267617.

The spelling of 1156335312 in words is "one billion, one hundred fifty-six million, three hundred thirty-five thousand, three hundred twelve".