1231314515000 has 40 divisors (see below), whose sum is σ = 2884969920360. Its totient is φ = 492525804000.

The previous prime is 1231314514993. The next prime is 1231314515017. The reversal of 1231314515000 is 5154131321.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×1231314515000² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 123126452 + ... + 123136451.

It is an arithmetic number, because the mean of its divisors is an integer number (72124248009).

Almost surely, 2^{1231314515000} is an apocalyptic number.

1231314515000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1231314515000 is an abundant number, since it is smaller than the sum of its proper divisors (1653655405360).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1231314515000 is an equidigital number, since it uses as much as digits as its factorization.

1231314515000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246262929 (or 246262910 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 26.

Adding to 1231314515000 its reverse (5154131321), we get a palindrome (1236468646321).

The spelling of 1231314515000 in words is "one trillion, two hundred thirty-one billion, three hundred fourteen million, five hundred fifteen thousand".