11940031 has 4 divisors (see below), whose sum is σ = 11955600. Its totient is φ = 11924464.

The previous prime is 11940029. The next prime is 11940041. The reversal of 11940031 is 13004911.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13004911 = 19 ⋅684469.

It is a cyclic number.

It is not a de Polignac number, because 11940031 - 2¹ = 11940029 is a prime.

It is a super-2 number, since 2×11940031² = 285128680561922, 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 = 11939990 and 11940008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11940041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6571 + ... + 8188.

It is an arithmetic number, because the mean of its divisors is an integer number (2988900).

Almost surely, 2^11940031 is an apocalyptic number.

11940031 is a deficient number, since it is larger than the sum of its proper divisors (15569).

11940031 is an equidigital number, since it uses as much as digits as its factorization.

11940031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15568.

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 11940031 is about 3455.4349943242. The cubic root of 11940031 is about 228.5608371766.

Adding to 11940031 its reverse (13004911), we get a palindrome (24944942).

The spelling of 11940031 in words is "eleven million, nine hundred forty thousand, thirty-one".