131434511 has 12 divisors (see below), whose sum is σ = 143205552. Its totient is φ = 120571776.

The previous prime is 131434487. The next prime is 131434517. The reversal of 131434511 is 115434131.

It is a happy number.

It is not a de Polignac number, because 131434511 - 2¹⁸ = 131172367 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 (131434517) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25895 + ... + 30551.

It is an arithmetic number, because the mean of its divisors is an integer number (11933796).

Almost surely, 2^131434511 is an apocalyptic number.

131434511 is a deficient number, since it is larger than the sum of its proper divisors (11771041).

131434511 is a wasteful number, since it uses less digits than its factorization.

131434511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4850 (or 4837 counting only the distinct ones).

The product of its digits is 720, while the sum is 23.

The square root of 131434511 is about 11464.4891294815. The cubic root of 131434511 is about 508.4362082454.

Adding to 131434511 its reverse (115434131), we get a palindrome (246868642).

The spelling of 131434511 in words is "one hundred thirty-one million, four hundred thirty-four thousand, five hundred eleven".