131024401 has 4 divisors (see below), whose sum is σ = 133172404. Its totient is φ = 128876400.

The previous prime is 131024393. The next prime is 131024429. The reversal of 131024401 is 104420131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 104420131 = 397 ⋅263023.

It can be written as a sum of positive squares in 2 ways, for example, as 48650625 + 82373776 = 6975^2 + 9076^2 .

It is a cyclic number.

It is not a de Polignac number, because 131024401 - 2³ = 131024393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131024441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1073910 + ... + 1074031.

It is an arithmetic number, because the mean of its divisors is an integer number (33293101).

Almost surely, 2^131024401 is an apocalyptic number.

It is an amenable number.

131024401 is a deficient number, since it is larger than the sum of its proper divisors (2148003).

131024401 is an equidigital number, since it uses as much as digits as its factorization.

131024401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2148002.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 131024401 is about 11446.5890552601. The cubic root of 131024401 is about 507.9068393553.

Adding to 131024401 its reverse (104420131), we get a palindrome (235444532).

The spelling of 131024401 in words is "one hundred thirty-one million, twenty-four thousand, four hundred one".