13031557503 has 8 divisors (see below), whose sum is σ = 17512224768. Its totient is φ = 8619297624.

The previous prime is 13031557501. The next prime is 13031557541. The reversal of 13031557503 is 30575513031.

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

It is not a de Polignac number, because 13031557503 - 2¹ = 13031557501 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13031557501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17101401 + ... + 17102162.

It is an arithmetic number, because the mean of its divisors is an integer number (2189028096).

Almost surely, 2^13031557503 is an apocalyptic number.

13031557503 is a deficient number, since it is larger than the sum of its proper divisors (4480667265).

13031557503 is a wasteful number, since it uses less digits than its factorization.

13031557503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34203693.

The product of its (nonzero) digits is 23625, while the sum is 33.

The spelling of 13031557503 in words is "thirteen billion, thirty-one million, five hundred fifty-seven thousand, five hundred three".