11320031 has 2 divisors, whose sum is σ = 11320032. Its totient is φ = 11320030.

The previous prime is 11320019. The next prime is 11320061. The reversal of 11320031 is 13002311.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11320031 - 2⁶ = 11319967 is a prime.

It is a super-2 number, since 2×11320031² = 256286203681922, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 11319994 and 11320021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11320061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5660015 + 5660016.

It is an arithmetic number, because the mean of its divisors is an integer number (5660016).

Almost surely, 2^11320031 is an apocalyptic number.

11320031 is a deficient number, since it is larger than the sum of its proper divisors (1).

11320031 is an equidigital number, since it uses as much as digits as its factorization.

11320031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 11320031 is about 3364.5253751458. The cubic root of 11320031 is about 224.5342199777.

Adding to 11320031 its reverse (13002311), we get a palindrome (24322342).

The spelling of 11320031 in words is "eleven million, three hundred twenty thousand, thirty-one".