11475131 has 2 divisors, whose sum is σ = 11475132. Its totient is φ = 11475130.

The previous prime is 11475103. The next prime is 11475133. The reversal of 11475131 is 13157411.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11475131 - 2⁶ = 11475067 is a prime.

It is a super-2 number, since 2×11475131² = 263357262934322, which contains 22 as substring.

Together with 11475133, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 11475097 and 11475106.

It is not a weakly prime, because it can be changed into another prime (11475133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5737565 + 5737566.

It is an arithmetic number, because the mean of its divisors is an integer number (5737566).

Almost surely, 2^11475131 is an apocalyptic number.

11475131 is a deficient number, since it is larger than the sum of its proper divisors (1).

11475131 is an equidigital number, since it uses as much as digits as its factorization.

11475131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 420, while the sum is 23.

The square root of 11475131 is about 3387.4962730607. The cubic root of 11475131 is about 225.5550477455. Note that the first 3 decimals are identical.

The spelling of 11475131 in words is "eleven million, four hundred seventy-five thousand, one hundred thirty-one".