15311421223 has 8 divisors (see below), whose sum is σ = 17513202848. Its totient is φ = 13113248544.

The previous prime is 15311421221. The next prime is 15311421299. The reversal of 15311421223 is 32212411351.

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 15311421223 - 2¹ = 15311421221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15311421221) 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, 893136 + ... + 910117.

It is an arithmetic number, because the mean of its divisors is an integer number (2189150356).

Almost surely, 2^15311421223 is an apocalyptic number.

15311421223 is a deficient number, since it is larger than the sum of its proper divisors (2201781625).

15311421223 is a wasteful number, since it uses less digits than its factorization.

15311421223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1804473.

The product of its digits is 1440, while the sum is 25.

Adding to 15311421223 its reverse (32212411351), we get a palindrome (47523832574).

The spelling of 15311421223 in words is "fifteen billion, three hundred eleven million, four hundred twenty-one thousand, two hundred twenty-three".