23135402 has 8 divisors (see below), whose sum is σ = 36744516. Its totient is φ = 10887232.

The previous prime is 23135389. The next prime is 23135443. The reversal of 23135402 is 20453132.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 21058921 + 2076481 = 4589^2 + 1441^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 340193 + ... + 340260.

Almost surely, 2^23135402 is an apocalyptic number.

23135402 is a deficient number, since it is larger than the sum of its proper divisors (13609114).

23135402 is a wasteful number, since it uses less digits than its factorization.

23135402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 680472.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 23135402 is about 4809.9274422802. The cubic root of 23135402 is about 284.9436720525.

Adding to 23135402 its reverse (20453132), we get a palindrome (43588534).

The spelling of 23135402 in words is "twenty-three million, one hundred thirty-five thousand, four hundred two".