1031015155113 has 6 divisors (see below), whose sum is σ = 1489244112954. Its totient is φ = 687343436736.

The previous prime is 1031015155091. The next prime is 1031015155139. The reversal of 1031015155113 is 3115515101301.

1031015155113 is a `hidden beast` number, since 1 + 0 + 3 + 101 + 5 + 1 + 551 + 1 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 860224715289 + 170790439824 = 927483^2 + 413268^2 .

It is not a de Polignac number, because 1031015155113 - 2⁸ = 1031015154857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1031015155193) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 57278619720 + ... + 57278619737.

It is an arithmetic number, because the mean of its divisors is an integer number (248207352159).

Almost surely, 2^{1031015155113} is an apocalyptic number.

It is an amenable number.

1031015155113 is a deficient number, since it is larger than the sum of its proper divisors (458228957841).

1031015155113 is a wasteful number, since it uses less digits than its factorization.

1031015155113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114557239463 (or 114557239460 counting only the distinct ones).

The product of its (nonzero) digits is 1125, while the sum is 27.

The spelling of 1031015155113 in words is "one trillion, thirty-one billion, fifteen million, one hundred fifty-five thousand, one hundred thirteen".