513231130642 has 8 divisors (see below), whose sum is σ = 770058377676. Its totient is φ = 256545004752.

The previous prime is 513231130567. The next prime is 513231130663. The reversal of 513231130642 is 246031132315.

It can be written as a sum of positive squares in 2 ways, for example, as 507925610721 + 5305519921 = 712689^2 + 72839^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35271193 + ... + 35285740.

Almost surely, 2^513231130642 is an apocalyptic number.

513231130642 is a deficient number, since it is larger than the sum of its proper divisors (256827247034).

513231130642 is a wasteful number, since it uses less digits than its factorization.

513231130642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70560572.

The product of its (nonzero) digits is 12960, while the sum is 31.

Adding to 513231130642 its reverse (246031132315), we get a palindrome (759262262957).

The spelling of 513231130642 in words is "five hundred thirteen billion, two hundred thirty-one million, one hundred thirty thousand, six hundred forty-two".