23012203431 has 16 divisors (see below), whose sum is σ = 35073228800. Its totient is φ = 13147200288.

The previous prime is 23012203427. The next prime is 23012203439. The reversal of 23012203431 is 13430221032.

It is not a de Polignac number, because 23012203431 - 2² = 23012203427 is a prime.

It is a super-2 number, since 2×23012203431² (a number of 22 digits) contains 22 as substring.

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

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23012203398 and 23012203407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23012203439) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 465 + ... + 214533.

It is an arithmetic number, because the mean of its divisors is an integer number (2192076800).

Almost surely, 2^23012203431 is an apocalyptic number.

23012203431 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

23012203431 is a deficient number, since it is larger than the sum of its proper divisors (12061025369).

23012203431 is a wasteful number, since it uses less digits than its factorization.

23012203431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219198.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 23012203431 its reverse (13430221032), we get a palindrome (36442424463).

The spelling of 23012203431 in words is "twenty-three billion, twelve million, two hundred three thousand, four hundred thirty-one".