1125401131 has 4 divisors (see below), whose sum is σ = 1125508072. Its totient is φ = 1125294192.

The previous prime is 1125401119. The next prime is 1125401161. The reversal of 1125401131 is 1311045211.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1125401131 - 2¹⁹ = 1124876843 is a prime.

It is a super-2 number, since 2×1125401131² = 2533055411312158322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1125401099 and 1125401108.

It is not an unprimeable number, because it can be changed into a prime (1125401161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35721 + ... + 59386.

It is an arithmetic number, because the mean of its divisors is an integer number (281377018).

Almost surely, 2^1125401131 is an apocalyptic number.

1125401131 is a deficient number, since it is larger than the sum of its proper divisors (106941).

1125401131 is an equidigital number, since it uses as much as digits as its factorization.

1125401131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106940.

The product of its (nonzero) digits is 120, while the sum is 19.

The square root of 1125401131 is about 33546.9988374519. The cubic root of 1125401131 is about 1040.1655095932.

Adding to 1125401131 its reverse (1311045211), we get a palindrome (2436446342).

The spelling of 1125401131 in words is "one billion, one hundred twenty-five million, four hundred one thousand, one hundred thirty-one".