23070531 has 16 divisors (see below), whose sum is σ = 33770880. Its totient is φ = 13893120.

The previous prime is 23070469. The next prime is 23070533. The reversal of 23070531 is 13507032.

It is a happy number.

It is not a de Polignac number, because 23070531 - 2¹³ = 23062339 is a prime.

It is a super-2 number, since 2×23070531² = 1064498801243922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23070498 and 23070507.

It is not an unprimeable number, because it can be changed into a prime (23070533) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3235 + ... + 7523.

It is an arithmetic number, because the mean of its divisors is an integer number (2110680).

Almost surely, 2^23070531 is an apocalyptic number.

23070531 is a deficient number, since it is larger than the sum of its proper divisors (10700349).

23070531 is a wasteful number, since it uses less digits than its factorization.

23070531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4466.

The product of its (nonzero) digits is 630, while the sum is 21.

The square root of 23070531 is about 4803.1792596154. The cubic root of 23070531 is about 284.6770981289.

Adding to 23070531 its reverse (13507032), we get a palindrome (36577563).

The spelling of 23070531 in words is "twenty-three million, seventy thousand, five hundred thirty-one".