1231534253404 has 48 divisors (see below), whose sum is σ = 2658523327488. Its totient is φ = 486100525248.

The previous prime is 1231534253309. The next prime is 1231534253407. The reversal of 1231534253404 is 4043524351321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231534253407) 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, 3657412 + ... + 3979915.

It is an arithmetic number, because the mean of its divisors is an integer number (55385902656).

Almost surely, 2^{1231534253404} is an apocalyptic number.

1231534253404 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1231534253404 is an abundant number, since it is smaller than the sum of its proper divisors (1426989074084).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1231534253404 is a wasteful number, since it uses less digits than its factorization.

1231534253404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7637794 (or 7637792 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 37.

The spelling of 1231534253404 in words is "one trillion, two hundred thirty-one billion, five hundred thirty-four million, two hundred fifty-three thousand, four hundred four".