23481031 has 4 divisors (see below), whose sum is σ = 26835472. Its totient is φ = 20126592.

The previous prime is 23481019. The next prime is 23481037. The reversal of 23481031 is 13018432.

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 23481031 - 2²³ = 15092423 is a prime.

It is a super-2 number, since 2×23481031² = 1102717633645922, 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 = 23480993 and 23481011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23481037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1677210 + ... + 1677223.

It is an arithmetic number, because the mean of its divisors is an integer number (6708868).

Almost surely, 2^23481031 is an apocalyptic number.

23481031 is a deficient number, since it is larger than the sum of its proper divisors (3354441).

23481031 is an equidigital number, since it uses as much as digits as its factorization.

23481031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3354440.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 23481031 is about 4845.7229594767. The cubic root of 23481031 is about 286.3556263699.

Adding to 23481031 its reverse (13018432), we get a palindrome (36499463).

The spelling of 23481031 in words is "twenty-three million, four hundred eighty-one thousand, thirty-one".