131005223251 has 8 divisors (see below), whose sum is σ = 158527329120. Its totient is φ = 105684885888.

The previous prime is 131005223243. The next prime is 131005223281. The reversal of 131005223251 is 152322500131.

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 131005223251 - 2³ = 131005223243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131005223221) 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, 550441996 + ... + 550442233.

It is an arithmetic number, because the mean of its divisors is an integer number (19815916140).

Almost surely, 2^131005223251 is an apocalyptic number.

131005223251 is a deficient number, since it is larger than the sum of its proper divisors (27522105869).

131005223251 is a wasteful number, since it uses less digits than its factorization.

131005223251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1100884253.

The product of its (nonzero) digits is 1800, while the sum is 25.

Adding to 131005223251 its reverse (152322500131), we get a palindrome (283327723382).

The spelling of 131005223251 in words is "one hundred thirty-one billion, five million, two hundred twenty-three thousand, two hundred fifty-one".