131190913 has 4 divisors (see below), whose sum is σ = 149932480. Its totient is φ = 112449348.

The previous prime is 131190869. The next prime is 131190967. The reversal of 131190913 is 319091131.

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 a de Polignac number, because none of the positive numbers 2^k-131190913 is a prime.

It is a super-2 number, since 2×131190913² = 34422111307547138, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131190973) 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, 9370773 + ... + 9370786.

It is an arithmetic number, because the mean of its divisors is an integer number (37483120).

Almost surely, 2^131190913 is an apocalyptic number.

It is an amenable number.

131190913 is a deficient number, since it is larger than the sum of its proper divisors (18741567).

131190913 is an equidigital number, since it uses as much as digits as its factorization.

131190913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18741566.

The product of its (nonzero) digits is 729, while the sum is 28.

The square root of 131190913 is about 11453.8601789964. The cubic root of 131190913 is about 508.1219056126.

The spelling of 131190913 in words is "one hundred thirty-one million, one hundred ninety thousand, nine hundred thirteen".