1031121110013 has 16 divisors (see below), whose sum is σ = 1383097700352. Its totient is φ = 683284878000.

The previous prime is 1031121110011. The next prime is 1031121110113. The reversal of 1031121110013 is 3100111211301.

It is not a de Polignac number, because 1031121110013 - 2¹ = 1031121110011 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1031121109974 and 1031121110001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1031121110011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42798 + ... + 1436688.

It is an arithmetic number, because the mean of its divisors is an integer number (86443606272).

Almost surely, 2^{1031121110013} is an apocalyptic number.

It is an amenable number.

1031121110013 is a deficient number, since it is larger than the sum of its proper divisors (351976590339).

1031121110013 is a wasteful number, since it uses less digits than its factorization.

1031121110013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1395376.

The product of its (nonzero) digits is 18, while the sum is 15.

Adding to 1031121110013 its reverse (3100111211301), we get a palindrome (4131232321314).

The spelling of 1031121110013 in words is "one trillion, thirty-one billion, one hundred twenty-one million, one hundred ten thousand, thirteen".