131100421 has 8 divisors (see below), whose sum is σ = 135850880. Its totient is φ = 126427392.

The previous prime is 131100401. The next prime is 131100427. The reversal of 131100421 is 124001131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 131100421 - 2⁹ = 131099909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131100427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15900 + ... + 22693.

It is an arithmetic number, because the mean of its divisors is an integer number (16981360).

Almost surely, 2^131100421 is an apocalyptic number.

It is an amenable number.

131100421 is a deficient number, since it is larger than the sum of its proper divisors (4750459).

131100421 is an equidigital number, since it uses as much as digits as its factorization.

131100421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38715.

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

The square root of 131100421 is about 11449.9092136139. The cubic root of 131100421 is about 508.0050490849.

Adding to 131100421 its reverse (124001131), we get a palindrome (255101552).

It can be divided in two parts, 1311004 and 21, that added together give a square (1311025 = 1145²).

The spelling of 131100421 in words is "one hundred thirty-one million, one hundred thousand, four hundred twenty-one".