131520252401 has 2 divisors, whose sum is σ = 131520252402. Its totient is φ = 131520252400.

The previous prime is 131520252379. The next prime is 131520252467. The reversal of 131520252401 is 104252025131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79609186801 + 51911065600 = 282151^2 + 227840^2 .

It is a cyclic number.

It is not a de Polignac number, because 131520252401 - 2⁶ = 131520252337 is a prime.

It is not a weakly prime, because it can be changed into another prime (131520252301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65760126200 + 65760126201.

It is an arithmetic number, because the mean of its divisors is an integer number (65760126201).

Almost surely, 2^131520252401 is an apocalyptic number.

It is an amenable number.

131520252401 is a deficient number, since it is larger than the sum of its proper divisors (1).

131520252401 is an equidigital number, since it uses as much as digits as its factorization.

131520252401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2400, while the sum is 26.

Adding to 131520252401 its reverse (104252025131), we get a palindrome (235772277532).

The spelling of 131520252401 in words is "one hundred thirty-one billion, five hundred twenty million, two hundred fifty-two thousand, four hundred one".