23453031 has 32 divisors (see below), whose sum is σ = 37969920. Its totient is φ = 12586464.

The previous prime is 23453029. The next prime is 23453033. The reversal of 23453031 is 13035432.

It is an interprime number because it is at equal distance from previous prime (23453029) and next prime (23453033).

It is not a de Polignac number, because 23453031 - 2¹ = 23453029 is a prime.

It is a super-2 number, since 2×23453031² = 1100089326173922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a zygodrome in base 5.

It is a junction number, because it is equal to n+sod(n) for n = 23452989 and 23453007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23453033) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28086 + ... + 28908.

It is an arithmetic number, because the mean of its divisors is an integer number (1186560).

Almost surely, 2^23453031 is an apocalyptic number.

23453031 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

23453031 is a deficient number, since it is larger than the sum of its proper divisors (14516889).

23453031 is a wasteful number, since it uses less digits than its factorization.

23453031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 915.

The product of its (nonzero) digits is 1080, while the sum is 21.

The square root of 23453031 is about 4842.8329518991. The cubic root of 23453031 is about 286.2417593275.

Adding to 23453031 its reverse (13035432), we get a palindrome (36488463).

The spelling of 23453031 in words is "twenty-three million, four hundred fifty-three thousand, thirty-one".