131125314021 has 16 divisors (see below), whose sum is σ = 188403827136. Its totient is φ = 80640504576.

The previous prime is 131125314011. The next prime is 131125314049. The reversal of 131125314021 is 120413521131.

It is not a de Polignac number, because 131125314021 - 2⁹ = 131125313509 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 131125313982 and 131125314000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131125314011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1021915 + ... + 1143048.

It is an arithmetic number, because the mean of its divisors is an integer number (11775239196).

Almost surely, 2^131125314021 is an apocalyptic number.

It is an amenable number.

131125314021 is a deficient number, since it is larger than the sum of its proper divisors (57278513115).

131125314021 is a wasteful number, since it uses less digits than its factorization.

131125314021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2166532.

The product of its (nonzero) digits is 720, while the sum is 24.

Adding to 131125314021 its reverse (120413521131), we get a palindrome (251538835152).

The spelling of 131125314021 in words is "one hundred thirty-one billion, one hundred twenty-five million, three hundred fourteen thousand, twenty-one".