131389097 has 4 divisors (see below), whose sum is σ = 150158976. Its totient is φ = 112619220.

The previous prime is 131389081. The next prime is 131389099. The reversal of 131389097 is 790983131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 790983131 = 593 ⋅1333867.

It is not a de Polignac number, because 131389097 - 2⁴ = 131389081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131389099) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9384929 + ... + 9384942.

It is an arithmetic number, because the mean of its divisors is an integer number (37539744).

Almost surely, 2^131389097 is an apocalyptic number.

It is an amenable number.

131389097 is a deficient number, since it is larger than the sum of its proper divisors (18769879).

131389097 is an equidigital number, since it uses as much as digits as its factorization.

131389097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18769878.

The product of its (nonzero) digits is 40824, while the sum is 41.

The square root of 131389097 is about 11462.5083206077. The cubic root of 131389097 is about 508.3776422424.

The spelling of 131389097 in words is "one hundred thirty-one million, three hundred eighty-nine thousand, ninety-seven".