131011432 has 8 divisors (see below), whose sum is σ = 245646450. Its totient is φ = 65505712.

The previous prime is 131011399. The next prime is 131011457. The reversal of 131011432 is 234110131.

It can be written as a sum of positive squares in only one way, i.e., 115218756 + 15792676 = 10734^2 + 3974^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8188207 + ... + 8188222.

Almost surely, 2^131011432 is an apocalyptic number.

It is an amenable number.

131011432 is a deficient number, since it is larger than the sum of its proper divisors (114635018).

131011432 is a wasteful number, since it uses less digits than its factorization.

131011432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16376435 (or 16376431 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 131011432 is about 11446.0225406034. The cubic root of 131011432 is about 507.8900809981.

Adding to 131011432 its reverse (234110131), we get a palindrome (365121563).

The spelling of 131011432 in words is "one hundred thirty-one million, eleven thousand, four hundred thirty-two".