23102215511 has 8 divisors (see below), whose sum is σ = 24305298864. Its totient is φ = 21929590080.

The previous prime is 23102215483. The next prime is 23102215523. The reversal of 23102215511 is 11551220132.

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

It is a cyclic number.

It is not a de Polignac number, because 23102215511 - 2⁶ = 23102215447 is a prime.

It is a super-2 number, since 2×23102215511² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23102215541) 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, 7612925 + ... + 7615958.

It is an arithmetic number, because the mean of its divisors is an integer number (3038162358).

Almost surely, 2^23102215511 is an apocalyptic number.

23102215511 is a deficient number, since it is larger than the sum of its proper divisors (1203083353).

23102215511 is a wasteful number, since it uses less digits than its factorization.

23102215511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15228961.

The product of its (nonzero) digits is 600, while the sum is 23.

Adding to 23102215511 its reverse (11551220132), we get a palindrome (34653435643).

The spelling of 23102215511 in words is "twenty-three billion, one hundred two million, two hundred fifteen thousand, five hundred eleven".