1131101001 has 24 divisors (see below), whose sum is σ = 1731191904. Its totient is φ = 709188480.

The previous prime is 1131100981. The next prime is 1131101003. The reversal of 1131101001 is 1001011311.

1131101001 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1131101001 - 2¹⁷ = 1130969929 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (1131101003) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 412806 + ... + 415536.

It is an arithmetic number, because the mean of its divisors is an integer number (72132996).

Almost surely, 2^1131101001 is an apocalyptic number.

It is an amenable number.

1131101001 is a deficient number, since it is larger than the sum of its proper divisors (600090903).

1131101001 is a wasteful number, since it uses less digits than its factorization.

1131101001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5461 (or 5458 counting only the distinct ones).

The product of its (nonzero) digits is 3, while the sum is 9.

The square root of 1131101001 is about 33631.8450430541. The cubic root of 1131101001 is about 1041.9186110098.

Adding to 1131101001 its reverse (1001011311), we get a palindrome (2132112312).

The spelling of 1131101001 in words is "one billion, one hundred thirty-one million, one hundred one thousand, one".