1231256553707 has 8 divisors (see below), whose sum is σ = 1242703895040. Its totient is φ = 1219859977320.

The previous prime is 1231256553643. The next prime is 1231256553719. The reversal of 1231256553707 is 7073556521321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1231256553707 - 2⁶ = 1231256553643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1231256553767) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12642503 + ... + 12739520.

It is an arithmetic number, because the mean of its divisors is an integer number (155337986880).

Almost surely, 2^{1231256553707} is an apocalyptic number.

1231256553707 is a deficient number, since it is larger than the sum of its proper divisors (11447341333).

1231256553707 is a wasteful number, since it uses less digits than its factorization.

1231256553707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25382473.

The product of its (nonzero) digits is 1323000, while the sum is 47.

The spelling of 1231256553707 in words is "one trillion, two hundred thirty-one billion, two hundred fifty-six million, five hundred fifty-three thousand, seven hundred seven".