131120401 has 4 divisors (see below), whose sum is σ = 136821312. Its totient is φ = 125419492.

The previous prime is 131120257. The next prime is 131120413. The reversal of 131120401 is 104021131.

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, and also an emirpimes, since its reverse is a distinct semiprime: 104021131 = 73 ⋅1424947.

It is a cyclic number.

It is not a de Polignac number, because 131120401 - 2¹¹ = 131118353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131120461) 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, 2850421 + ... + 2850466.

It is an arithmetic number, because the mean of its divisors is an integer number (34205328).

Almost surely, 2^131120401 is an apocalyptic number.

It is an amenable number.

131120401 is a deficient number, since it is larger than the sum of its proper divisors (5700911).

131120401 is an equidigital number, since it uses as much as digits as its factorization.

131120401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5700910.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 131120401 is about 11450.7816763748. The cubic root of 131120401 is about 508.0308548126.

Adding to 131120401 its reverse (104021131), we get a palindrome (235141532).

It can be divided in two parts, 1311 and 20401, that added together give a palindrome (21712).

The spelling of 131120401 in words is "one hundred thirty-one million, one hundred twenty thousand, four hundred one".