15131113 has 8 divisors (see below), whose sum is σ = 15697800. Its totient is φ = 14572800.

The previous prime is 15131101. The next prime is 15131119. The reversal of 15131113 is 31113151.

It can be written as a sum of positive squares in 4 ways, for example, as 7469289 + 7661824 = 2733^2 + 2768^2 .

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 15131113 - 2⁹ = 15130601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15131119) 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, 1713 + ... + 5761.

It is an arithmetic number, because the mean of its divisors is an integer number (1962225).

Almost surely, 2^15131113 is an apocalyptic number.

It is an amenable number.

15131113 is a deficient number, since it is larger than the sum of its proper divisors (566687).

15131113 is a wasteful number, since it uses less digits than its factorization.

15131113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4187.

The product of its digits is 45, while the sum is 16.

The square root of 15131113 is about 3889.8731341780. The cubic root of 15131113 is about 247.3376849559.

Adding to 15131113 its reverse (31113151), we get a palindrome (46244264).

The spelling of 15131113 in words is "fifteen million, one hundred thirty-one thousand, one hundred thirteen".