1031113145515 has 4 divisors (see below), whose sum is σ = 1237335774624. Its totient is φ = 824890516408.

The previous prime is 1031113145483. The next prime is 1031113145533. The reversal of 1031113145515 is 5155413111301.

1031113145515 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1031113145515 - 2⁵ = 1031113145483 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103111314547 + ... + 103111314556.

It is an arithmetic number, because the mean of its divisors is an integer number (309333943656).

Almost surely, 2^{1031113145515} is an apocalyptic number.

1031113145515 is a deficient number, since it is larger than the sum of its proper divisors (206222629109).

1031113145515 is an equidigital number, since it uses as much as digits as its factorization.

1031113145515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206222629108.

The product of its (nonzero) digits is 4500, while the sum is 31.

Adding to 1031113145515 its reverse (5155413111301), we get a palindrome (6186526256816).

The spelling of 1031113145515 in words is "one trillion, thirty-one billion, one hundred thirteen million, one hundred forty-five thousand, five hundred fifteen".