131004251 has 16 divisors (see below), whose sum is σ = 156592128. Its totient is φ = 107157600.

The previous prime is 131004217. The next prime is 131004253. The reversal of 131004251 is 152400131.

It is a cyclic number.

It is not a de Polignac number, because 131004251 - 2¹⁸ = 130742107 is a prime.

It is a super-2 number, since 2×131004251² = 34324227560142002, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (131004253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105806 + ... + 107036.

It is an arithmetic number, because the mean of its divisors is an integer number (9787008).

Almost surely, 2^131004251 is an apocalyptic number.

131004251 is a deficient number, since it is larger than the sum of its proper divisors (25587877).

131004251 is a wasteful number, since it uses less digits than its factorization.

131004251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1922.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 131004251 is about 11445.7088465503. The cubic root of 131004251 is about 507.8808013364.

Adding to 131004251 its reverse (152400131), we get a palindrome (283404382).

The spelling of 131004251 in words is "one hundred thirty-one million, four thousand, two hundred fifty-one".