131213471 has 4 divisors (see below), whose sum is σ = 131273472. Its totient is φ = 131153472.

The previous prime is 131213461. The next prime is 131213473. The reversal of 131213471 is 174312131.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131213471 is a prime.

It is a super-3 number, since 3×131213471³ (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 (131213473) 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, 26591 + ... + 31136.

It is an arithmetic number, because the mean of its divisors is an integer number (32818368).

Almost surely, 2^131213471 is an apocalyptic number.

131213471 is a deficient number, since it is larger than the sum of its proper divisors (60001).

131213471 is an equidigital number, since it uses as much as digits as its factorization.

131213471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60000.

The product of its digits is 504, while the sum is 23.

The square root of 131213471 is about 11454.8448701848. The cubic root of 131213471 is about 508.1510274392.

The spelling of 131213471 in words is "one hundred thirty-one million, two hundred thirteen thousand, four hundred seventy-one".