131442473 has 2 divisors, whose sum is σ = 131442474. Its totient is φ = 131442472.

The previous prime is 131442461. The next prime is 131442517. The reversal of 131442473 is 374244131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 94633984 + 36808489 = 9728^2 + 6067^2 .

It is a cyclic number.

It is not a de Polignac number, because 131442473 - 2¹⁴ = 131426089 is a prime.

It is not a weakly prime, because it can be changed into another prime (131442673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65721236 + 65721237.

It is an arithmetic number, because the mean of its divisors is an integer number (65721237).

Almost surely, 2^131442473 is an apocalyptic number.

It is an amenable number.

131442473 is a deficient number, since it is larger than the sum of its proper divisors (1).

131442473 is an equidigital number, since it uses as much as digits as its factorization.

131442473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8064, while the sum is 29.

The square root of 131442473 is about 11464.8363703980. The cubic root of 131442473 is about 508.4464746696.

The spelling of 131442473 in words is "one hundred thirty-one million, four hundred forty-two thousand, four hundred seventy-three".