5131660031 has 4 divisors (see below), whose sum is σ = 5131866792. Its totient is φ = 5131453272.

The previous prime is 5131660021. The next prime is 5131660043. The reversal of 5131660031 is 1300661315.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5131660031 is a prime.

It is a super-2 number, since 2×5131660031² = 52667869347525841922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5131660021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60116 + ... + 117801.

It is an arithmetic number, because the mean of its divisors is an integer number (1282966698).

Almost surely, 2^5131660031 is an apocalyptic number.

5131660031 is a deficient number, since it is larger than the sum of its proper divisors (206761).

5131660031 is a wasteful number, since it uses less digits than its factorization.

5131660031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206760.

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 5131660031 is about 71635.6058884128. The cubic root of 5131660031 is about 1724.8551337841.

The spelling of 5131660031 in words is "five billion, one hundred thirty-one million, six hundred sixty thousand, thirty-one".