131917473 has 6 divisors (see below), whose sum is σ = 190547474. Its totient is φ = 87944976.

The previous prime is 131917427. The next prime is 131917483. The reversal of 131917473 is 374719131.

It can be written as a sum of positive squares in only one way, i.e., 113358609 + 18558864 = 10647^2 + 4308^2 .

It is not a de Polignac number, because 131917473 - 2¹⁷ = 131786401 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (131917483) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7328740 + ... + 7328757.

Almost surely, 2^131917473 is an apocalyptic number.

It is an amenable number.

131917473 is a deficient number, since it is larger than the sum of its proper divisors (58630001).

131917473 is a wasteful number, since it uses less digits than its factorization.

131917473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14657503 (or 14657500 counting only the distinct ones).

The product of its digits is 15876, while the sum is 36.

The square root of 131917473 is about 11485.5332048625. The cubic root of 131917473 is about 509.0582042254.

The spelling of 131917473 in words is "one hundred thirty-one million, nine hundred seventeen thousand, four hundred seventy-three".