23402031 has 8 divisors (see below), whose sum is σ = 31298304. Its totient is φ = 15553560.

The previous prime is 23402009. The next prime is 23402039. The reversal of 23402031 is 13020432.

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

It is not a de Polignac number, because 23402031 - 2⁶ = 23401967 is a prime.

It is a super-2 number, since 2×23402031² = 1095310109849922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 23402031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23402039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10791 + ... + 12776.

It is an arithmetic number, because the mean of its divisors is an integer number (3912288).

Almost surely, 2^23402031 is an apocalyptic number.

23402031 is a deficient number, since it is larger than the sum of its proper divisors (7896273).

23402031 is a wasteful number, since it uses less digits than its factorization.

23402031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23901.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 23402031 is about 4837.5645732124. The cubic root of 23402031 is about 286.0341255513.

Adding to 23402031 its reverse (13020432), we get a palindrome (36422463).

It can be divided in two parts, 2340 and 2031, that added together give a triangular number (4371 = T₉₃).

The spelling of 23402031 in words is "twenty-three million, four hundred two thousand, thirty-one".