1002311231525 has 12 divisors (see below), whose sum is σ = 1252353457344. Its totient is φ = 795727998000.

The previous prime is 1002311231507. The next prime is 1002311231527. The reversal of 1002311231525 is 5251321132001.

It is not a de Polignac number, because 1002311231525 - 2¹⁴ = 1002311215141 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1002311231494 and 1002311231503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002311231527) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 153021341 + ... + 153027890.

It is an arithmetic number, because the mean of its divisors is an integer number (104362788112).

Almost surely, 2^{1002311231525} is an apocalyptic number.

It is an amenable number.

1002311231525 is a deficient number, since it is larger than the sum of its proper divisors (250042225819).

1002311231525 is a wasteful number, since it uses less digits than its factorization.

1002311231525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306049372 (or 306049367 counting only the distinct ones).

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

Adding to 1002311231525 its reverse (5251321132001), we get a palindrome (6253632363526).

The spelling of 1002311231525 in words is "one trillion, two billion, three hundred eleven million, two hundred thirty-one thousand, five hundred twenty-five".