5131000161 has 63 divisors (see below), whose sum is σ = 8972652321. Its totient is φ = 2924263944.

The previous prime is 5131000159. The next prime is 5131000183. The reversal of 5131000161 is 1610001315.

5131000161 = 1³ + 2³ + ... + 378³.

The square root of 5131000161 is 71631.

It is a perfect power (a square), and thus also a powerful number.

It is a tau number, because it is divible by the number of its divisors (63).

It is not a de Polignac number, because 5131000161 - 2¹ = 5131000159 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5131000261) by changing a digit.

It is a polite number, since it can be written in 62 ways as a sum of consecutive naturals, for example, 13538070 + ... + 13538448.

Almost surely, 2^5131000161 is an apocalyptic number.

5131000161 is the 71631-st square number.

5131000161 is the 35816-th centered octagonal number.

It is an amenable number.

5131000161 is a deficient number, since it is larger than the sum of its proper divisors (3841652160).

5131000161 is an frugal number, since it uses more digits than its factorization.

5131000161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 790 (or 389 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 18.

The cubic root of 5131000161 is about 1724.7811987132.

Adding to 5131000161 its reverse (1610001315), we get a palindrome (6741001476).

The spelling of 5131000161 in words is "five billion, one hundred thirty-one million, one hundred sixty-one", and thus it is an aban number.