131547001 has 2 divisors, whose sum is σ = 131547002. Its totient is φ = 131547000.

The previous prime is 131546957. The next prime is 131547011. The reversal of 131547001 is 100745131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 105781225 + 25765776 = 10285^2 + 5076^2 .

It is an emirp because it is prime and its reverse (100745131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 131547001 - 2⁹ = 131546489 is a prime.

It is a super-2 number, since 2×131547001² = 34609226944188002, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (131547011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65773500 + 65773501.

It is an arithmetic number, because the mean of its divisors is an integer number (65773501).

Almost surely, 2^131547001 is an apocalyptic number.

It is an amenable number.

131547001 is a deficient number, since it is larger than the sum of its proper divisors (1).

131547001 is an equidigital number, since it uses as much as digits as its factorization.

131547001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 420, while the sum is 22.

The square root of 131547001 is about 11469.3940990795. The cubic root of 131547001 is about 508.5812175473.

The spelling of 131547001 in words is "one hundred thirty-one million, five hundred forty-seven thousand, one".