23135031 has 8 divisors (see below), whose sum is σ = 34274160. Its totient is φ = 15423336.

The previous prime is 23135023. The next prime is 23135051. The reversal of 23135031 is 13053132.

It is not a de Polignac number, because 23135031 - 2³ = 23135023 is a prime.

It is a super-2 number, since 2×23135031² = 1070459318741922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23134995 and 23135013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23135051) 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 7 ways as a sum of consecutive naturals, for example, 428400 + ... + 428453.

It is an arithmetic number, because the mean of its divisors is an integer number (4284270).

Almost surely, 2^23135031 is an apocalyptic number.

23135031 is a deficient number, since it is larger than the sum of its proper divisors (11139129).

23135031 is an equidigital number, since it uses as much as digits as its factorization.

23135031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 856862 (or 856856 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 18.

The square root of 23135031 is about 4809.8888760552. Note that the first 4 decimals coincide. The cubic root of 23135031 is about 284.9421489226.

Adding to 23135031 its reverse (13053132), we get a palindrome (36188163).

The spelling of 23135031 in words is "twenty-three million, one hundred thirty-five thousand, thirty-one".