15200220231 has 48 divisors (see below), whose sum is σ = 26011874304. Its totient is φ = 8371968192.

The previous prime is 15200220223. The next prime is 15200220241. The reversal of 15200220231 is 13202200251.

15200220231 is a `hidden beast` number, since 15 + 200 + 220 + 231 = 666.

It is not a de Polignac number, because 15200220231 - 2³ = 15200220223 is a prime.

It is a super-2 number, since 2×15200220231² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15200220241) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 218946 + ... + 279888.

It is an arithmetic number, because the mean of its divisors is an integer number (541914048).

Almost surely, 2^15200220231 is an apocalyptic number.

15200220231 is a deficient number, since it is larger than the sum of its proper divisors (10811654073).

15200220231 is a wasteful number, since it uses less digits than its factorization.

15200220231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61100 (or 61097 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

Adding to 15200220231 its reverse (13202200251), we get a palindrome (28402420482).

The spelling of 15200220231 in words is "fifteen billion, two hundred million, two hundred twenty thousand, two hundred thirty-one".