1113531000 has 64 divisors (see below), whose sum is σ = 3474226080. Its totient is φ = 296940800.

The previous prime is 1113530989. The next prime is 1113531017. The reversal of 1113531000 is 1353111.

It is a super-2 number, since 2×1113531000² = 2479902575922000000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 182589 + ... + 188588.

Almost surely, 2^1113531000 is an apocalyptic number.

1113531000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1113531000 is an abundant number, since it is smaller than the sum of its proper divisors (2360695080).

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

1113531000 is a wasteful number, since it uses less digits than its factorization.

1113531000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371201 (or 371187 counting only the distinct ones).

The product of its (nonzero) digits is 45, while the sum is 15.

The square root of 1113531000 is about 33369.6119246239. The cubic root of 1113531000 is about 1036.4955391867.

Adding to 1113531000 its reverse (1353111), we get a palindrome (1114884111).

The spelling of 1113531000 in words is "one billion, one hundred thirteen million, five hundred thirty-one thousand".