231515500134002 has 32 divisors (see below), whose sum is σ = 414177393484800. Its totient is φ = 94898297747088.

The previous prime is 231515500133999. The next prime is 231515500134011. The reversal of 231515500134002 is 200431005515132.

It is a self number, because there is not a number n which added to its sum of digits gives 231515500134002.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29341352 + ... + 36386067.

It is an arithmetic number, because the mean of its divisors is an integer number (12943043546400).

Almost surely, 2^{231515500134002} is an apocalyptic number.

231515500134002 is a deficient number, since it is larger than the sum of its proper divisors (182661893350798).

231515500134002 is a wasteful number, since it uses less digits than its factorization.

231515500134002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65738390.

The product of its (nonzero) digits is 18000, while the sum is 32.

Adding to 231515500134002 its reverse (200431005515132), we get a palindrome (431946505649134).

The spelling of 231515500134002 in words is "two hundred thirty-one trillion, five hundred fifteen billion, five hundred million, one hundred thirty-four thousand, two".