131433011 has 4 divisors (see below), whose sum is σ = 133096800. Its totient is φ = 129769224.

The previous prime is 131433007. The next prime is 131433023. The reversal of 131433011 is 110334131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 131433011 - 2² = 131433007 is a prime.

It is a super-2 number, since 2×131433011² = 34549272761052242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131433041) 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, 831776 + ... + 831933.

It is an arithmetic number, because the mean of its divisors is an integer number (33274200).

Almost surely, 2^131433011 is an apocalyptic number.

131433011 is a deficient number, since it is larger than the sum of its proper divisors (1663789).

131433011 is an equidigital number, since it uses as much as digits as its factorization.

131433011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1663788.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 131433011 is about 11464.4237098949. The cubic root of 131433011 is about 508.4342740572.

Adding to 131433011 its reverse (110334131), we get a palindrome (241767142).

The spelling of 131433011 in words is "one hundred thirty-one million, four hundred thirty-three thousand, eleven".