11342531 has 4 divisors (see below), whose sum is σ = 11479272. Its totient is φ = 11205792.

The previous prime is 11342503. The next prime is 11342537. The reversal of 11342531 is 13524311.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11342531 - 2¹⁸ = 11080387 is a prime.

It is a super-2 number, since 2×11342531² = 257306018971922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11342537) 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, 68246 + ... + 68411.

It is an arithmetic number, because the mean of its divisors is an integer number (2869818).

Almost surely, 2^11342531 is an apocalyptic number.

11342531 is a deficient number, since it is larger than the sum of its proper divisors (136741).

11342531 is an equidigital number, since it uses as much as digits as its factorization.

11342531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136740.

The product of its digits is 360, while the sum is 20.

The square root of 11342531 is about 3367.8674261319. The cubic root of 11342531 is about 224.6828849552.

Adding to 11342531 its reverse (13524311), we get a palindrome (24866842).

The spelling of 11342531 in words is "eleven million, three hundred forty-two thousand, five hundred thirty-one".