23131402 has 8 divisors (see below), whose sum is σ = 39653856. Its totient is φ = 9913452.

The previous prime is 23131393. The next prime is 23131429. The reversal of 23131402 is 20413132.

It is a happy number.

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

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 826108 + ... + 826135.

It is an arithmetic number, because the mean of its divisors is an integer number (4956732).

Almost surely, 2^23131402 is an apocalyptic number.

23131402 is a deficient number, since it is larger than the sum of its proper divisors (16522454).

23131402 is a wasteful number, since it uses less digits than its factorization.

23131402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1652252.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 23131402 is about 4809.5116176177. The cubic root of 23131402 is about 284.9272493081.

Adding to 23131402 its reverse (20413132), we get a palindrome (43544534).

The spelling of 23131402 in words is "twenty-three million, one hundred thirty-one thousand, four hundred two".