1231503635104 has 24 divisors (see below), whose sum is σ = 2438067612960. Its totient is φ = 612311860416.

The previous prime is 1231503635093. The next prime is 1231503635129. The reversal of 1231503635104 is 4015363051321.

It is a self number, because there is not a number n which added to its sum of digits gives 1231503635104.

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, 107492844 + ... + 107504299.

It is an arithmetic number, because the mean of its divisors is an integer number (101586150540).

Almost surely, 2^{1231503635104} is an apocalyptic number.

It is an amenable number.

1231503635104 is a deficient number, since it is larger than the sum of its proper divisors (1206563977856).

1231503635104 is a wasteful number, since it uses less digits than its factorization.

1231503635104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214997332 (or 214997324 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 34.

Adding to 1231503635104 its reverse (4015363051321), we get a palindrome (5246866686425).

The spelling of 1231503635104 in words is "one trillion, two hundred thirty-one billion, five hundred three million, six hundred thirty-five thousand, one hundred four".