260400031 has 8 divisors (see below), whose sum is σ = 269236224. Its totient is φ = 251591160.

The previous prime is 260400029. The next prime is 260400047. The reversal of 260400031 is 130004062.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 260400031 - 2¹ = 260400029 is a prime.

It is a super-2 number, since 2×260400031² = 135616352289601922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 260399978 and 260400014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (260400331) 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 7 ways as a sum of consecutive naturals, for example, 13566 + ... + 26548.

It is an arithmetic number, because the mean of its divisors is an integer number (33654528).

Almost surely, 2^260400031 is an apocalyptic number.

260400031 is a deficient number, since it is larger than the sum of its proper divisors (8836193).

260400031 is a wasteful number, since it uses less digits than its factorization.

260400031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13661.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 260400031 is about 16136.9151636860. The cubic root of 260400031 is about 638.5775954322.

Adding to 260400031 its reverse (130004062), we get a palindrome (390404093).

The spelling of 260400031 in words is "two hundred sixty million, four hundred thousand, thirty-one".