3131432513 has 4 divisors (see below), whose sum is σ = 3416108208. Its totient is φ = 2846756820.

The previous prime is 3131432489. The next prime is 3131432569. The reversal of 3131432513 is 3152341313.

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, and also an emirpimes, since its reverse is a distinct semiprime: 3152341313 = 11 ⋅286576483.

It is a cyclic number.

It is not a de Polignac number, because 3131432513 - 2¹⁶ = 3131366977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3131432593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142337831 + ... + 142337852.

It is an arithmetic number, because the mean of its divisors is an integer number (854027052).

Almost surely, 2^3131432513 is an apocalyptic number.

It is an amenable number.

3131432513 is a deficient number, since it is larger than the sum of its proper divisors (284675695).

3131432513 is a wasteful number, since it uses less digits than its factorization.

3131432513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284675694.

The product of its digits is 3240, while the sum is 26.

The square root of 3131432513 is about 55959.2040061329. The cubic root of 3131432513 is about 1463.0113166527.

Adding to 3131432513 its reverse (3152341313), we get a palindrome (6283773826).

The spelling of 3131432513 in words is "three billion, one hundred thirty-one million, four hundred thirty-two thousand, five hundred thirteen".