131013197 has 4 divisors (see below), whose sum is σ = 149729376. Its totient is φ = 112297020.

The previous prime is 131013149. The next prime is 131013229. The reversal of 131013197 is 791310131.

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.

It is a cyclic number.

It is not a de Polignac number, because 131013197 - 2⁶ = 131013133 is a prime.

It is a super-4 number, since 4×131013197⁴ (a number of 34 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131013107) 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, 9358079 + ... + 9358092.

It is an arithmetic number, because the mean of its divisors is an integer number (37432344).

Almost surely, 2^131013197 is an apocalyptic number.

It is an amenable number.

131013197 is a deficient number, since it is larger than the sum of its proper divisors (18716179).

131013197 is an equidigital number, since it uses as much as digits as its factorization.

131013197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18716178.

The product of its (nonzero) digits is 567, while the sum is 26.

The square root of 131013197 is about 11446.0996413626. The cubic root of 131013197 is about 507.8923617710.

The spelling of 131013197 in words is "one hundred thirty-one million, thirteen thousand, one hundred ninety-seven".