1103131953 has 90 divisors (see below), whose sum is σ = 2107957698. Its totient is φ = 572806080.

The previous prime is 1103131927. The next prime is 1103131973. The reversal of 1103131953 is 3591313011.

It can be written as a sum of positive squares in only one way, i.e., 929762064 + 173369889 = 30492^2 + 13167^2 .

It is not a de Polignac number, because 1103131953 - 2¹⁷ = 1103000881 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1103131973) by changing a digit.

It is a polite number, since it can be written in 89 ways as a sum of consecutive naturals, for example, 479101 + ... + 481397.

Almost surely, 2^1103131953 is an apocalyptic number.

It is an amenable number.

1103131953 is a deficient number, since it is larger than the sum of its proper divisors (1004825745).

1103131953 is a wasteful number, since it uses less digits than its factorization.

1103131953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2345 (or 2318 counting only the distinct ones).

The product of its (nonzero) digits is 1215, while the sum is 27.

The square root of 1103131953 is about 33213.4303106439. The cubic root of 1103131953 is about 1033.2589000727.

Adding to 1103131953 its reverse (3591313011), we get a palindrome (4694444964).

The spelling of 1103131953 in words is "one billion, one hundred three million, one hundred thirty-one thousand, nine hundred fifty-three".