23201031 has 8 divisors (see below), whose sum is σ = 35353984. Its totient is φ = 13257720.

The previous prime is 23201029. The next prime is 23201041. The reversal of 23201031 is 13010232.

It is a happy number.

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

It is not a de Polignac number, because 23201031 - 2¹ = 23201029 is a prime.

It is a super-2 number, since 2×23201031² = 1076575678925922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23200998 and 23201016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23201021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 552385 + ... + 552426.

It is an arithmetic number, because the mean of its divisors is an integer number (4419248).

Almost surely, 2^23201031 is an apocalyptic number.

23201031 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

23201031 is a deficient number, since it is larger than the sum of its proper divisors (12152953).

23201031 is a wasteful number, since it uses less digits than its factorization.

23201031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1104821.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 23201031 is about 4816.7448551901. The cubic root of 23201031 is about 285.2128542236.

Adding to 23201031 its reverse (13010232), we get a palindrome (36211263).

The spelling of 23201031 in words is "twenty-three million, two hundred one thousand, thirty-one".