1131152020 has 24 divisors (see below), whose sum is σ = 2405491200. Its totient is φ = 446732832.

The previous prime is 1131152003. The next prime is 1131152039. The reversal of 1131152020 is 202511311.

It is a junction number, because it is equal to n+sod(n) for n = 1131151985 and 1131152003.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 356380 + ... + 359539.

It is an arithmetic number, because the mean of its divisors is an integer number (100228800).

Almost surely, 2^1131152020 is an apocalyptic number.

1131152020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1131152020 is an abundant number, since it is smaller than the sum of its proper divisors (1274339180).

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

1131152020 is a wasteful number, since it uses less digits than its factorization.

1131152020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 716007 (or 716005 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 1131152020 is about 33632.6035269350. The cubic root of 1131152020 is about 1041.9342762323.

Adding to 1131152020 its reverse (202511311), we get a palindrome (1333663331).

The spelling of 1131152020 in words is "one billion, one hundred thirty-one million, one hundred fifty-two thousand, twenty".