131355401 has 4 divisors (see below), whose sum is σ = 135592704. Its totient is φ = 127118100.

The previous prime is 131355373. The next prime is 131355409. The reversal of 131355401 is 104553131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 131355401 - 2⁶ = 131355337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131355409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2118605 + ... + 2118666.

It is an arithmetic number, because the mean of its divisors is an integer number (33898176).

Almost surely, 2^131355401 is an apocalyptic number.

It is an amenable number.

131355401 is a deficient number, since it is larger than the sum of its proper divisors (4237303).

131355401 is an equidigital number, since it uses as much as digits as its factorization.

131355401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4237302.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 131355401 is about 11461.0383910011. The cubic root of 131355401 is about 508.3341790783.

The spelling of 131355401 in words is "one hundred thirty-one million, three hundred fifty-five thousand, four hundred one".