1131550400 has 42 divisors (see below), whose sum is σ = 2784325140. Its totient is φ = 452619520.

The previous prime is 1131550393. The next prime is 1131550423. The reversal of 1131550400 is 40551311.

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

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 352010 + ... + 355209.

Almost surely, 2^1131550400 is an apocalyptic number.

1131550400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1131550400 is an abundant number, since it is smaller than the sum of its proper divisors (1652774740).

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

1131550400 is an equidigital number, since it uses as much as digits as its factorization.

1131550400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 707241 (or 707226 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 1131550400 is about 33638.5255324903. The cubic root of 1131550400 is about 1042.0565813541.

The spelling of 1131550400 in words is "one billion, one hundred thirty-one million, five hundred fifty thousand, four hundred".