15231013 has 24 divisors (see below), whose sum is σ = 18852864. Its totient is φ = 12247200.

The previous prime is 15231011. The next prime is 15231017. The reversal of 15231013 is 31013251.

It is not a de Polignac number, because 15231013 - 2¹ = 15231011 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 (15231011) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 56068 + ... + 56338.

It is an arithmetic number, because the mean of its divisors is an integer number (785536).

Almost surely, 2^15231013 is an apocalyptic number.

It is an amenable number.

15231013 is a deficient number, since it is larger than the sum of its proper divisors (3621851).

15231013 is a wasteful number, since it uses less digits than its factorization.

15231013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353 (or 346 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 15231013 is about 3902.6930445527. The cubic root of 15231013 is about 247.8808231148.

Adding to 15231013 its reverse (31013251), we get a palindrome (46244264).

The spelling of 15231013 in words is "fifteen million, two hundred thirty-one thousand, thirteen".