513231315445 has 32 divisors (see below), whose sum is σ = 635611219200. Its totient is φ = 397648341504.

The previous prime is 513231315419. The next prime is 513231315461. The reversal of 513231315445 is 544513132315.

It is a cyclic number.

It is not a de Polignac number, because 513231315445 - 2¹⁵ = 513231282677 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19777699 + ... + 19803631.

It is an arithmetic number, because the mean of its divisors is an integer number (19862850600).

Almost surely, 2^513231315445 is an apocalyptic number.

It is an amenable number.

513231315445 is a deficient number, since it is larger than the sum of its proper divisors (122379903755).

513231315445 is a wasteful number, since it uses less digits than its factorization.

513231315445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26989.

The product of its digits is 108000, while the sum is 37.

The spelling of 513231315445 in words is "five hundred thirteen billion, two hundred thirty-one million, three hundred fifteen thousand, four hundred forty-five".