1131434120 has 32 divisors (see below), whose sum is σ = 2552175000. Its totient is φ = 451427328.

The previous prime is 1131434113. The next prime is 1131434123. The reversal of 1131434120 is 214341311.

It can be written as a sum of positive squares in 4 ways, for example, as 1119170116 + 12264004 = 33454^2 + 3502^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1131434092 and 1131434101.

It is not an unprimeable number, because it can be changed into a prime (1131434123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19745 + ... + 51504.

Almost surely, 2^1131434120 is an apocalyptic number.

1131434120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1131434120 is an abundant number, since it is smaller than the sum of its proper divisors (1420740880).

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

1131434120 is a wasteful number, since it uses less digits than its factorization.

1131434120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71657 (or 71653 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 1131434120 is about 33636.7971126860. The cubic root of 1131434120 is about 1042.0208856426.

Adding to 1131434120 its reverse (214341311), we get a palindrome (1345775431).

The spelling of 1131434120 in words is "one billion, one hundred thirty-one million, four hundred thirty-four thousand, one hundred twenty".