131913471 has 4 divisors (see below), whose sum is σ = 175884632. Its totient is φ = 87942312.

The previous prime is 131913469. The next prime is 131913493. The reversal of 131913471 is 174319131.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 131913471 - 2¹ = 131913469 is a prime.

It is a super-3 number, since 3×131913471³ (a number of 25 digits) contains 333 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 (131913461) 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, 21985576 + ... + 21985581.

It is an arithmetic number, because the mean of its divisors is an integer number (43971158).

Almost surely, 2^131913471 is an apocalyptic number.

131913471 is a deficient number, since it is larger than the sum of its proper divisors (43971161).

131913471 is an equidigital number, since it uses as much as digits as its factorization.

131913471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43971160.

The product of its digits is 2268, while the sum is 30.

The square root of 131913471 is about 11485.3589843766. The cubic root of 131913471 is about 509.0530563818.

The spelling of 131913471 in words is "one hundred thirty-one million, nine hundred thirteen thousand, four hundred seventy-one".