1012310403521 has 16 divisors (see below), whose sum is σ = 1023342581376. Its totient is φ = 1001333751936.

The previous prime is 1012310403509. The next prime is 1012310403547. The reversal of 1012310403521 is 1253040132101.

It is a cyclic number.

It is not a de Polignac number, because 1012310403521 - 2¹⁰ = 1012310402497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1012310403571) 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, 187914590 + ... + 187919976.

It is an arithmetic number, because the mean of its divisors is an integer number (63958911336).

Almost surely, 2^{1012310403521} is an apocalyptic number.

It is an amenable number.

1012310403521 is a deficient number, since it is larger than the sum of its proper divisors (11032177855).

1012310403521 is a wasteful number, since it uses less digits than its factorization.

1012310403521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10168.

The product of its (nonzero) digits is 720, while the sum is 23.

Adding to 1012310403521 its reverse (1253040132101), we get a palindrome (2265350535622).

The spelling of 1012310403521 in words is "one trillion, twelve billion, three hundred ten million, four hundred three thousand, five hundred twenty-one".