23403031 has 2 divisors, whose sum is σ = 23403032. Its totient is φ = 23403030.

The previous prime is 23403011. The next prime is 23403043. The reversal of 23403031 is 13030432.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23403031 - 2⁷ = 23402903 is a prime.

It is a super-2 number, since 2×23403031² = 1095403719973922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23402996 and 23403014.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23403001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11701515 + 11701516.

It is an arithmetic number, because the mean of its divisors is an integer number (11701516).

Almost surely, 2^23403031 is an apocalyptic number.

23403031 is a deficient number, since it is larger than the sum of its proper divisors (1).

23403031 is an equidigital number, since it uses as much as digits as its factorization.

23403031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 23403031 is about 4837.6679299018. The cubic root of 23403031 is about 286.0381996998.

Adding to 23403031 its reverse (13030432), we get a palindrome (36433463).

The spelling of 23403031 in words is "twenty-three million, four hundred three thousand, thirty-one".