15131097 has 8 divisors (see below), whose sum is σ = 22416480. Its totient is φ = 10087380.

The previous prime is 15131089. The next prime is 15131101. The reversal of 15131097 is 79013151.

It is a happy number.

It is not a de Polignac number, because 15131097 - 2³ = 15131089 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 560411 = 15131097 / (1 + 5 + 1 + 3 + 1 + 0 + 9 + 7).

It is a self number, because there is not a number n which added to its sum of digits gives 15131097.

It is not an unprimeable number, because it can be changed into a prime (15131027) 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, 280179 + ... + 280232.

It is an arithmetic number, because the mean of its divisors is an integer number (2802060).

Almost surely, 2^15131097 is an apocalyptic number.

It is an amenable number.

15131097 is a deficient number, since it is larger than the sum of its proper divisors (7285383).

15131097 is an equidigital number, since it uses as much as digits as its factorization.

15131097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560420 (or 560414 counting only the distinct ones).

The product of its (nonzero) digits is 945, while the sum is 27.

The square root of 15131097 is about 3889.8710775551. The cubic root of 15131097 is about 247.3375977756.

The spelling of 15131097 in words is "fifteen million, one hundred thirty-one thousand, ninety-seven".