131433401 has 4 divisors (see below), whose sum is σ = 143381904. Its totient is φ = 119484900.

The previous prime is 131433383. The next prime is 131433427. The reversal of 131433401 is 104334131.

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 a de Polignac number, because none of the positive numbers 2^k-131433401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131435401) 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, 5974235 + ... + 5974256.

It is an arithmetic number, because the mean of its divisors is an integer number (35845476).

Almost surely, 2^131433401 is an apocalyptic number.

131433401 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

131433401 is a deficient number, since it is larger than the sum of its proper divisors (11948503).

131433401 is a wasteful number, since it uses less digits than its factorization.

131433401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11948502.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 131433401 is about 11464.4407190233. The cubic root of 131433401 is about 508.4347769476.

Adding to 131433401 its reverse (104334131), we get a palindrome (235767532).

The spelling of 131433401 in words is "one hundred thirty-one million, four hundred thirty-three thousand, four hundred one".