513001232403 has 32 divisors (see below), whose sum is σ = 755867132160. Its totient is φ = 306891970560.

The previous prime is 513001232371. The next prime is 513001232477. The reversal of 513001232403 is 304232100315.

It is not a de Polignac number, because 513001232403 - 2⁵ = 513001232371 is a prime.

It is not an unprimeable number, because it can be changed into a prime (513001232603) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1001751 + ... + 1424607.

It is an arithmetic number, because the mean of its divisors is an integer number (23620847880).

Almost surely, 2^513001232403 is an apocalyptic number.

513001232403 is a deficient number, since it is larger than the sum of its proper divisors (242865899757).

513001232403 is a wasteful number, since it uses less digits than its factorization.

513001232403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423347.

The product of its (nonzero) digits is 2160, while the sum is 24.

Adding to 513001232403 its reverse (304232100315), we get a palindrome (817233332718).

The spelling of 513001232403 in words is "five hundred thirteen billion, one million, two hundred thirty-two thousand, four hundred three".