515145105031 has 8 divisors (see below), whose sum is σ = 516487688480. Its totient is φ = 513802748448.

The previous prime is 515145105011. The next prime is 515145105043. The reversal of 515145105031 is 130501541515.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 515145105031 - 2¹⁵ = 515145072263 is a prime.

It is a super-2 number, since 2×515145105031² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 515145104984 and 515145105002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (515145105011) 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 7 ways as a sum of consecutive naturals, for example, 5097865 + ... + 5197933.

It is an arithmetic number, because the mean of its divisors is an integer number (64560961060).

Almost surely, 2^515145105031 is an apocalyptic number.

515145105031 is a deficient number, since it is larger than the sum of its proper divisors (1342583449).

515145105031 is a wasteful number, since it uses less digits than its factorization.

515145105031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113433.

The product of its (nonzero) digits is 7500, while the sum is 31.

Adding to 515145105031 its reverse (130501541515), we get a palindrome (645646646546).

The spelling of 515145105031 in words is "five hundred fifteen billion, one hundred forty-five million, one hundred five thousand, thirty-one".