1131213024 has 36 divisors (see below), whose sum is σ = 3216887856. Its totient is φ = 377070912.

The previous prime is 1131213023. The next prime is 1131213043. The reversal of 1131213024 is 4203121311.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a junction number, because it is equal to n+sod(n) for n = 1131212988 and 1131213006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131213023) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1963624 + ... + 1964199.

It is an arithmetic number, because the mean of its divisors is an integer number (89357996).

Almost surely, 2^1131213024 is an apocalyptic number.

It is an amenable number.

1131213024 is an abundant number, since it is smaller than the sum of its proper divisors (2085674832).

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

1131213024 is a wasteful number, since it uses less digits than its factorization.

1131213024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3927839 (or 3927828 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1131213024 is about 33633.5104323055. The cubic root of 1131213024 is about 1041.9530066990.

Adding to 1131213024 its reverse (4203121311), we get a palindrome (5334334335).

It can be divided in two parts, 11312 and 13024, that added together give a square (24336 = 156²).

The spelling of 1131213024 in words is "one billion, one hundred thirty-one million, two hundred thirteen thousand, twenty-four".