131121231345351 has 48 divisors (see below), whose sum is σ = 214929597923040. Its totient is φ = 76361909725440.

The previous prime is 131121231345289. The next prime is 131121231345353. The reversal of 131121231345351 is 153543132121131.

131121231345351 is a `hidden beast` number, since 1 + 3 + 1 + 121 + 2 + 31 + 3 + 453 + 51 = 666.

It is not a de Polignac number, because 131121231345351 - 2⁹ = 131121231344839 is a prime.

It is a super-2 number, since 2×131121231345351² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131121231345353) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 29249236 + ... + 33432921.

It is an arithmetic number, because the mean of its divisors is an integer number (4477699956730).

Almost surely, 2^{131121231345351} is an apocalyptic number.

131121231345351 is a deficient number, since it is larger than the sum of its proper divisors (83808366577689).

131121231345351 is a wasteful number, since it uses less digits than its factorization.

131121231345351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62683136 (or 62683133 counting only the distinct ones).

The product of its digits is 32400, while the sum is 36.

Adding to 131121231345351 its reverse (153543132121131), we get a palindrome (284664363466482).

The spelling of 131121231345351 in words is "one hundred thirty-one trillion, one hundred twenty-one billion, two hundred thirty-one million, three hundred forty-five thousand, three hundred fifty-one".