1231501152005 has 24 divisors (see below), whose sum is σ = 1495288948608. Its totient is φ = 973675980288.

The previous prime is 1231501151999. The next prime is 1231501152017. The reversal of 1231501152005 is 5002511051321.

It is not a de Polignac number, because 1231501152005 - 2²⁰ = 1231500103429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34183712 + ... + 34219718.

It is an arithmetic number, because the mean of its divisors is an integer number (62303706192).

Almost surely, 2^{1231501152005} is an apocalyptic number.

It is an amenable number.

1231501152005 is a deficient number, since it is larger than the sum of its proper divisors (263787796603).

1231501152005 is an frugal number, since it uses more digits than its factorization.

1231501152005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36933 (or 36836 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 26.

The spelling of 1231501152005 in words is "one trillion, two hundred thirty-one billion, five hundred one million, one hundred fifty-two thousand, five".