23131320101 has 4 divisors (see below), whose sum is σ = 23145805932. Its totient is φ = 23116834272.

The previous prime is 23131320089. The next prime is 23131320137. The reversal of 23131320101 is 10102313132.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1815612100 + 21315708001 = 42610^2 + 145999^2 .

It is a cyclic number.

It is not a de Polignac number, because 23131320101 - 2¹⁴ = 23131303717 is a prime.

It is a super-2 number, since 2×23131320101² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23131320101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23131320151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7240520 + ... + 7243713.

It is an arithmetic number, because the mean of its divisors is an integer number (5786451483).

Almost surely, 2^23131320101 is an apocalyptic number.

It is an amenable number.

23131320101 is a deficient number, since it is larger than the sum of its proper divisors (14485831).

23131320101 is a wasteful number, since it uses less digits than its factorization.

23131320101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14485830.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 23131320101 its reverse (10102313132), we get a palindrome (33233633233).

The spelling of 23131320101 in words is "twenty-three billion, one hundred thirty-one million, three hundred twenty thousand, one hundred one".