513231122104 has 8 divisors (see below), whose sum is σ = 962308353960. Its totient is φ = 256615561048.

The previous prime is 513231122039. The next prime is 513231122147. The reversal of 513231122104 is 401221132315.

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

It is a super-2 number, since 2×513231122104² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32076945124 + ... + 32076945139.

It is an arithmetic number, because the mean of its divisors is an integer number (120288544245).

Almost surely, 2^513231122104 is an apocalyptic number.

It is an amenable number.

513231122104 is a deficient number, since it is larger than the sum of its proper divisors (449077231856).

513231122104 is a wasteful number, since it uses less digits than its factorization.

513231122104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64153890269 (or 64153890265 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

Adding to 513231122104 its reverse (401221132315), we get a palindrome (914452254419).

The spelling of 513231122104 in words is "five hundred thirteen billion, two hundred thirty-one million, one hundred twenty-two thousand, one hundred four".