261210124131 has 8 divisors (see below), whose sum is σ = 379941998784. Its totient is φ = 158309166120.

The previous prime is 261210124129. The next prime is 261210124151. The reversal of 261210124131 is 131421012162.

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

It is not a de Polignac number, because 261210124131 - 2¹ = 261210124129 is a prime.

It is a super-2 number, since 2×261210124131² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (261210124151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3957729121 + ... + 3957729186.

It is an arithmetic number, because the mean of its divisors is an integer number (47492749848).

Almost surely, 2^261210124131 is an apocalyptic number.

261210124131 is a deficient number, since it is larger than the sum of its proper divisors (118731874653).

261210124131 is a wasteful number, since it uses less digits than its factorization.

261210124131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7915458321.

The product of its (nonzero) digits is 576, while the sum is 24.

Adding to 261210124131 its reverse (131421012162), we get a palindrome (392631136293).

The spelling of 261210124131 in words is "two hundred sixty-one billion, two hundred ten million, one hundred twenty-four thousand, one hundred thirty-one".