131004725 has 12 divisors (see below), whose sum is σ = 163485444. Its totient is φ = 104133120.

The previous prime is 131004689. The next prime is 131004739. The reversal of 131004725 is 527400131.

It can be written as a sum of positive squares in 6 ways, for example, as 2114116 + 128890609 = 1454^2 + 11353^2 .

It is not a de Polignac number, because 131004725 - 2⁶ = 131004661 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 131004725.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12764 + ... + 20613.

It is an arithmetic number, because the mean of its divisors is an integer number (13623787).

Almost surely, 2^131004725 is an apocalyptic number.

It is an amenable number.

131004725 is a deficient number, since it is larger than the sum of its proper divisors (32480719).

131004725 is a wasteful number, since it uses less digits than its factorization.

131004725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33544 (or 33539 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 131004725 is about 11445.7295529818. The cubic root of 131004725 is about 507.8814138743.

Adding to 131004725 its reverse (527400131), we get a palindrome (658404856).

The spelling of 131004725 in words is "one hundred thirty-one million, four thousand, seven hundred twenty-five".