131402023525 has 18 divisors (see below), whose sum is σ = 171965585202. Its totient is φ = 99588895200.

The previous prime is 131402023471. The next prime is 131402023531. The reversal of 131402023525 is 525320204131.

It can be written as a sum of positive squares in 3 ways, for example, as 40516053796 + 90885969729 = 201286^2 + 301473^2 .

It is not a de Polignac number, because 131402023525 - 2¹⁹ = 131401499237 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131402023493 and 131402023502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 7270866 + ... + 7288915.

Almost surely, 2^131402023525 is an apocalyptic number.

It is an amenable number.

131402023525 is a deficient number, since it is larger than the sum of its proper divisors (40563561677).

131402023525 is a wasteful number, since it uses less digits than its factorization.

131402023525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14559829 (or 14559805 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

Adding to 131402023525 its reverse (525320204131), we get a palindrome (656722227656).

The spelling of 131402023525 in words is "one hundred thirty-one billion, four hundred two million, twenty-three thousand, five hundred twenty-five".