402560131 has 4 divisors (see below), whose sum is σ = 408230064. Its totient is φ = 396890200.

The previous prime is 402560129. The next prime is 402560177. The reversal of 402560131 is 131065204.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 402560131 - 2¹ = 402560129 is a prime.

It is a super-2 number, since 2×402560131² = 324109318141474322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402560231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2834860 + ... + 2835001.

It is an arithmetic number, because the mean of its divisors is an integer number (102057516).

Almost surely, 2^402560131 is an apocalyptic number.

402560131 is a deficient number, since it is larger than the sum of its proper divisors (5669933).

402560131 is an equidigital number, since it uses as much as digits as its factorization.

402560131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5669932.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 402560131 is about 20063.9011909449. The cubic root of 402560131 is about 738.3748918456.

The spelling of 402560131 in words is "four hundred two million, five hundred sixty thousand, one hundred thirty-one".